1. B Adjie. Independent origins of tetraploid cryptic species in the fern \emphCeratopteris thalictroides. Journal of Plant Research 120:129–138, 2007.
    Abstract Ceratopteris thalictroides (L.) Brongn is a tetraploid fern species that contains at least three cryptic species, the south, the north and the third type. In this study we combined data from both chloroplast DNA (cpDNA) and nuclear DNA sequences of three diploid species and three cryptic species of C. thalictroides to unravel the origin of the cryptic species, particularly of the reticulate relationships among the diploid and tetraploid taxa in the genus Ceratopteris. Of the three diploid species examined, C. cornuta had cpDNA identical to that of the tetraploid third type plants, and this diploid species is a possible maternal ancestor of the tetraploid third type. Analysis of the homologue of the Arabidopsis thaliana LEAFY gene (CLFY1) identified ten alleles in the genus Ceratopteris, with six alleles found in C. thalictroides. The unrooted tree of the CLFY1 gene revealed four clusters. Each cryptic species showed fixed heterozygosity at the CLFY1 locus and had two alleles from different clusters of the CLFY1 tree. Consideration of the cpDNA sequences, CLFY1 genotypes of the cryptic species and CLFY1 gene tree in concert suggested that the cryptic species of C. thalictroides had originated through independent allopolyploidization events involving C. cornuta and two unknown hypothetical diploid species.
    BibTeX

    @article{adjie2007independent,
    	title = "Independent origins of tetraploid cryptic species in the fern \emph{Ceratopteris thalictroides}",
    	author = "Adjie , B.",
    	journal = "Journal of Plant Research",
    	year = 2007,
    	pages = "129--138",
    	volume = 120,
    	abstract = "Ceratopteris thalictroides (L.) Brongn is a tetraploid fern species that contains at least three cryptic species, the south, the north and the third type. In this study we combined data from both chloroplast DNA (cpDNA) and nuclear DNA sequences of three diploid species and three cryptic species of C. thalictroides to unravel the origin of the cryptic species, particularly of the reticulate relationships among the diploid and tetraploid taxa in the genus Ceratopteris. Of the three diploid species examined, C. cornuta had cpDNA identical to that of the tetraploid third type plants, and this diploid species is a possible maternal ancestor of the tetraploid third type. Analysis of the homologue of the Arabidopsis thaliana LEAFY gene (CLFY1) identified ten alleles in the genus Ceratopteris, with six alleles found in C. thalictroides. The unrooted tree of the CLFY1 gene revealed four clusters. Each cryptic species showed fixed heterozygosity at the CLFY1 locus and had two alleles from different clusters of the CLFY1 tree. Consideration of the cpDNA sequences, CLFY1 genotypes of the cryptic species and CLFY1 gene tree in concert suggested that the cryptic species of C. thalictroides had originated through independent allopolyploidization events involving C. cornuta and two unknown hypothetical diploid species."
    }
    
  2. D A Alongi, J P Hill and M J Germino. Opportunistic heterotrophy in gametophytes of the homosporous fern Ceratoperis richardii. NRC Research Press - Botany 87:799-806, 2009.
    BibTeX

    @article{alongi-b-2009,
    	title = "Opportunistic heterotrophy in gametophytes of the homosporous fern Ceratoperis richardii",
    	author = "Alongi , D.A. and Hill , J.P. and Germino , M.J.",
    	journal = "NRC Research Press - Botany",
    	year = 2009,
    	pages = "799-806",
    	volume = 87,
    	eprint = "docs/Alongi_Hill_Germino_2009.pdf"
    }
    
  3. E H Amonoo-Neizer, D Nyamah and S B Bakiamoh. Mercury and arsenic pollution in soil and biological samples around the mining town of Obuasi, Ghana. Water, Air and Soil Pollution 91:363-373, 1996.
    BibTeX

    @article{amonooneizer1996,
    	title = "Mercury and arsenic pollution in soil and biological samples around the mining town of Obuasi, Ghana",
    	author = "Amonoo-Neizer , E.H. and Nyamah , D. and Bakiamoh , S.B.",
    	journal = "Water, Air and Soil Pollution",
    	year = 1996,
    	pages = "363-373",
    	volume = 91
    }
    
  4. K Aso, M Kato, J A Banks and M Hasebe. Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants. Molecular Biology and Evolution 16:544-552, 1999.
    BibTeX

    @article{aso1999,
    	title = "Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants",
    	author = "Aso , K and Kato , M. and Banks , J.A. and Hasebe , M.",
    	journal = "Molecular Biology and Evolution",
    	year = 1999,
    	pages = "544-552",
    	volume = 16
    }
    
  5. Hickok L G Auge R.M. and A J W Stodola. Psychrometric pressure-volume analysis of osmoregulation in roots, shoots and whole sporophytes of salinized Ceratopteris. Plant Physiology 91:322-330, 1989.
    BibTeX

    @article{auge1989,
    	title = "Psychrometric pressure-volume analysis of osmoregulation in roots, shoots and whole sporophytes of salinized Ceratopteris",
    	author = "Auge R.M., L.G. Hickok and Stodola , A.J.W.",
    	journal = "Plant Physiology",
    	year = 1989,
    	pages = "322-330",
    	volume = 91
    }
    
  6. J A Banks. Gametophyte development in ferns. Annual Review of Plant Physiology and Molecular Biology 50:163-186, 1999.
    BibTeX

    @article{banks1999,
    	title = "Gametophyte development in ferns",
    	author = "Banks , J.A.",
    	journal = "Annual Review of Plant Physiology and Molecular Biology",
    	year = 1999,
    	pages = "163-186",
    	volume = 50
    }
    
  7. J Banks. Sex determination in the fern Ceratopteris. Trends in Plant Science 2:175-180, 1997.
    BibTeX

    @article{banks1997a,
    	title = "Sex determination in the fern Ceratopteris",
    	author = "Banks , J.",
    	journal = "Trends in Plant Science",
    	year = 1997,
    	pages = "175-180",
    	volume = 2
    }
    
  8. J Banks. The TRANSFORMER genes of the fern Ceratopteris simultaneously promote meristem and archegonia development and repress antheridia development in the developing gametophyte. Genetics 147:1885-1897, 1997.
    BibTeX

    @article{banks1997b,
    	title = "The TRANSFORMER genes of the fern Ceratopteris simultaneously promote meristem and archegonia development and repress antheridia development in the developing gametophyte",
    	author = "Banks , J.",
    	journal = "Genetics",
    	year = 1997,
    	pages = "1885-1897",
    	volume = 147
    }
    
  9. J A Banks. Sex-determining genes in the homosporous fern Ceratopteris. Development 120:1949-1958, 1994.
    BibTeX

    @article{banks1994,
    	title = "Sex-determining genes in the homosporous fern Ceratopteris",
    	author = "Banks , J.A.",
    	journal = "Development",
    	year = 1994,
    	pages = "1949-1958",
    	volume = 120
    }
    
  10. J A Banks, L Hickok and M A Webb. The programming of sexual phenotype in the homosporous fern Ceratopteris richardii. International Journal of Plant Science 154:522-534, 1993.
    BibTeX

    @article{banks1993,
    	title = "The programming of sexual phenotype in the homosporous fern Ceratopteris richardii",
    	author = "Banks , J.A. and Hickok , L. and Webb , M.A.",
    	journal = "International Journal of Plant Science",
    	year = 1993,
    	pages = "522-534",
    	volume = 154
    }
    
  11. R C Benedict. Fern miscellany: Brooklyn. American Fern Journal 38:148-154, 1948.
    BibTeX

    @article{benedict1948,
    	title = "Fern miscellany: Brooklyn",
    	author = "Benedict , R.C.",
    	journal = "American Fern Journal",
    	year = 1948,
    	pages = "148-154",
    	volume = 38
    }
    
  12. R C Benedict. The genus Ceratopteris: A preliminary revision. Bulletin of the Torrey Botanical Club 36:463-479, 1909.
    BibTeX

    @article{benedict1909,
    	title = "The genus Ceratopteris: A preliminary revision",
    	author = "Benedict , R.C.",
    	journal = "Bulletin of the Torrey Botanical Club",
    	year = 1909,
    	pages = "463-479",
    	volume = 36
    }
    
  13. T J Bushart. Studies of calcium ion-ATPase involvement in the gravity-directed calcium current and polar axis alignment of germinating Ceratopteris richardii spores. 2007.
    BibTeX

    @phdthesis{bushart2007studies,
    	title = "Studies of calcium ion-ATPase involvement in the gravity-directed calcium current and polar axis alignment of germinating Ceratopteris richardii spores",
    	author = "Bushart , T. J.",
    	year = 2007,
    	institution = "University of Texas, Austin, Texas",
    	publisher = "University of Texas, Austin, Texas. Dissertation"
    }
    
  14. T J Bushart and S J Roux. Conserved features of germination and polarized cell growth: A few insights from a pollen-fern spore comparison. Annals of Botany (London) 99:9–17, 2007.
    Abstract Anemia, Ceratopteris richardii, Dryopteris
    BibTeX

    @article{bushart2007,
    	title = "Conserved features of germination and polarized cell growth: A few insights from a pollen-fern spore comparison",
    	author = "Bushart , T. J. and Roux , S. J.",
    	journal = "Annals of Botany (London)",
    	year = 2007,
    	pages = "9--17",
    	volume = 99,
    	abstract = "Anemia, Ceratopteris richardii, Dryopteris"
    }
    
  15. P J Calie. A mutant hunt using the C-Fern (Ceratopteris richardii). The American Biology Teacher 67(5):295-299, 2005.
    Abstract A modification of the popular C-Fern system, the tropical fern Ceratopteris richardii is developed in which students plate out a genetically mixed set of fern spores and then select for specific mutants. This exercise can provide students with an experience in plant mutant selection and can be used as a platform to expose students to a diverse array of the approaches and tools used by research scientists.
    BibTeX

    @article{calie2005,
    	title = "A mutant hunt using the C-Fern (Ceratopteris richardii)",
    	author = "Calie , P.J.",
    	journal = "The American Biology Teacher",
    	year = 2005,
    	pages = "295-299",
    	volume = "67(5)",
    	abstract = "A modification of the popular C-Fern system, the tropical fern Ceratopteris richardii is developed in which students plate out a genetically mixed set of fern spores and then select for specific mutants. This exercise can provide students with an experience in plant mutant selection and can be used as a platform to expose students to a diverse array of the approaches and tools used by research scientists."
    }
    
  16. Jian-Guo Cao, Nai-Ying Yang and Quan-Xi Wang. Ultrastructure of the mature egg and fertilization in the fern Ceratopteris thalictroides. Journal of Integrative Plant Biology 51(3):243-250, 2009.
    Abstract The ultrastructure of the mature egg and fertilization in the fern Ceratopteris thalictroides (L.) Brongn. were observed by transmission electron microscopy. The results revealed that the mature egg possesses an obvious egg membrane at the periphery of the egg. Furthermore, a fertilization pore was identified in the upper egg membrane of the mature egg. The structure of the pore is described for the first time. The fertilization experiment indicated that spermatozoids crowd into the cavity above the egg through the neck canal of the archegonium; however, only one of these can penetrate into the egg through the fertilization pore. Immediately on penetration of the spermatozoid, the egg begins to shrink. The volume of the fertilized egg decreases to almost one-half that of the unfertilized egg. As a result, the protoplasm of the fertilized egg becomes dense and opaque, which may lead to a situation where the organelles of both the egg and the fertilizing spermatozoid become indistinguishable. Simultaneously, abundant vesicles containing concentric membranes or opaque materials appear near the fertilization pore in the cytoplasm of the fertilized egg. These vesicles are considered to act as a barrier that prevents polyspermy. The present study provides a new insight into the ultrastructure of the mature egg and the cytological mechanism of fertilization in ferns.
    BibTeX

    @article{cao-b-2009,
    	title = "Ultrastructure of the mature egg and fertilization in the fern {Ceratopteris thalictroides}",
    	author = "Cao , Jian-Guo and Yang , Nai-Ying and Wang , Quan-Xi",
    	journal = "Journal of Integrative Plant Biology",
    	year = 2009,
    	number = 3,
    	pages = "243-250",
    	volume = 51,
    	abstract = "The ultrastructure of the mature egg and fertilization in the fern Ceratopteris thalictroides (L.) Brongn. were observed by transmission electron microscopy. The results revealed that the mature egg possesses an obvious egg membrane at the periphery of the egg. Furthermore, a fertilization pore was identified in the upper egg membrane of the mature egg. The structure of the pore is described for the first time. The fertilization experiment indicated that spermatozoids crowd into the cavity above the egg through the neck canal of the archegonium; however, only one of these can penetrate into the egg through the fertilization pore. Immediately on penetration of the spermatozoid, the egg begins to shrink. The volume of the fertilized egg decreases to almost one-half that of the unfertilized egg. As a result, the protoplasm of the fertilized egg becomes dense and opaque, which may lead to a situation where the organelles of both the egg and the fertilizing spermatozoid become indistinguishable. Simultaneously, abundant vesicles containing concentric membranes or opaque materials appear near the fertilization pore in the cytoplasm of the fertilized egg. These vesicles are considered to act as a barrier that prevents polyspermy. The present study provides a new insight into the ultrastructure of the mature egg and the cytological mechanism of fertilization in ferns."
    }
    
  17. S Carlquist and E L Schneider. SEM studies of vessels in ferns: 14. Ceratopteris. Aquatic Botany 66:1-8, 2000.
    BibTeX

    @article{carlquist2000,
    	title = "SEM studies of vessels in ferns: 14. Ceratopteris",
    	author = "Carlquist , S. and Schneider , E.L.",
    	journal = "Aquatic Botany",
    	year = 2000,
    	pages = "1-8",
    	volume = 66
    }
    
  18. E W Carroll, O J Schwarz and L G Hickok. Biochemical studies of paraquat-tolerant mutants of the fern Ceratopteris richardii. Plant Physiology 87:651-654, 1988.
    BibTeX

    @article{carroll1988,
    	title = "Biochemical studies of paraquat-tolerant mutants of the fern Ceratopteris richardii",
    	author = "Carroll , E.W. and Schwarz , O.J. and Hickok , L.G.",
    	journal = "Plant Physiology",
    	year = 1988,
    	pages = "651-654",
    	volume = 87
    }
    
  19. C F Cave and P R Bell. The cytochemistry of the walls of the spermatocytes of Ceratopteris thalictroides. Planta 109:99-104, 1973.
    BibTeX

    @article{cave1973,
    	title = "The cytochemistry of the walls of the spermatocytes of Ceratopteris thalictroides",
    	author = "Cave , C.F. and Bell , P.R.",
    	journal = "Planta",
    	year = 1973,
    	pages = "99-104",
    	volume = 109
    }
    
  20. R Chasan. Ceratopteris: A model plant for the 90s. The Plant Cell 2:113-115, 1992.
    BibTeX

    @article{chasan1992,
    	title = "Ceratopteris: A model plant for the 90s",
    	author = "Chasan , R.",
    	journal = "The Plant Cell",
    	year = 1992,
    	pages = "113-115",
    	volume = 2,
    	eprint = "http://www.c-fern.org/docs/Chasan_1992_model_plant_90s.pdf"
    }
    
  21. A Chatterjee, D M Porterfield, P S Smith and S J Roux. Gravity-directed calcium current in germinating spores of Ceratopteris richardii. Planta 210:607, 2000.
    BibTeX

    @article{chatterjee2000a,
    	title = "Gravity-directed calcium current in germinating spores of Ceratopteris richardii",
    	author = "Chatterjee , A. and Porterfield , D.M. and Smith , P.S. and Roux , S.J.",
    	journal = "Planta",
    	year = 2000,
    	pages = 607,
    	volume = 210
    }
    
  22. A Chatterjee and S J Roux. Ceratopteris richardii: A productive model for revealing secrets of signaling and development. Journal of Plant Growth Regulation 19 (3):284-289, 2000.
    BibTeX

    @article{chatterjee2000b,
    	title = "Ceratopteris richardii: A productive model for revealing secrets of signaling and development",
    	author = "Chatterjee , A. and Roux , S.J.",
    	journal = "Journal of Plant Growth Regulation",
    	year = 2000,
    	pages = "284-289",
    	volume = "19 (3)"
    }
    
  23. H K Cheema. Morphogenetic studies on the induction of apospory in Ceratopteris pteridoides (Hook.) Hieron, in aseptic culture [Pteridophyta]. Indian Journal of Experimental Botany 17:1403-1405, 1979.
    BibTeX

    @article{cheema1979,
    	title = "Morphogenetic studies on the induction of apospory in Ceratopteris pteridoides (Hook.) Hieron, in aseptic culture [Pteridophyta]",
    	author = "Cheema , H.K.",
    	journal = "Indian Journal of Experimental Botany",
    	year = 1979,
    	pages = "1403-1405",
    	volume = 17
    }
    
  24. H K Cheema and M B Sharma. Induction of multiple shoots from adventitious buds and leaf callus in Ceratopteris thalictroides. Indian Fern Journal 11:63-67, 1994.
    BibTeX

    @article{cheema1994,
    	title = "Induction of multiple shoots from adventitious buds and leaf callus in Ceratopteris thalictroides",
    	author = "Cheema , H.K. and Sharma , M.B.",
    	journal = "Indian Fern Journal",
    	year = 1994,
    	pages = "63-67",
    	volume = 11
    }
    
  25. D J Cheruiyot and B W Schwartz. Conversion of male gametophytes to hermaphrodites in the fern Ceratopteris richardii. BIOS 78:58–61, 2007.
    BibTeX

    @article{cheruiyot2007,
    	title = "Conversion of male gametophytes to hermaphrodites in the fern Ceratopteris richardii",
    	author = "Cheruiyot , D. J. and Schwartz , B. W.",
    	journal = "BIOS",
    	year = 2007,
    	pages = "58--61",
    	volume = 78
    }
    
  26. S H T Chiang. Insoluble carbohydrates and RNA in root apical cell of Ceratopteris thalictroides [Histochemistry]. Taiwania 27:1-8l, 1982.
    BibTeX

    @article{chiang1982,
    	title = "Insoluble carbohydrates and RNA in root apical cell of Ceratopteris thalictroides [Histochemistry]",
    	author = "Chiang , S.H.T.",
    	journal = "Taiwania",
    	year = 1982,
    	pages = "1-8l",
    	volume = 27
    }
    
  27. S H T Chiang. The time of mitosis in the root apical cell of Ceratopteris pteridoides. Taiwania 17:14-26, 1972.
    BibTeX

    @article{chiang1972,
    	title = "The time of mitosis in the root apical cell of Ceratopteris pteridoides",
    	author = "Chiang , S.H.T.",
    	journal = "Taiwania",
    	year = 1972,
    	pages = "14-26",
    	volume = 17
    }
    
  28. S -H T Chiang and Y -L Chiang. Influence of shading and gibberellic acid on growth and sex of the prothalli of Ceratopteris thalictroides. Taiwania 13:179-193, 1967.
    BibTeX

    @article{chiang1967,
    	title = "Influence of shading and gibberellic acid on growth and sex of the prothalli of Ceratopteris thalictroides",
    	author = "Chiang , S.-H.T. and Chiang , Y.-L.",
    	journal = "Taiwania",
    	year = 1967,
    	pages = "179-193",
    	volume = 13
    }
    
  29. Y L Chiang. On the sex of the prothalli of Ceratopteris pteridoides (Hook.) Hieron. Taiwania 21:134-137, 1976.
    BibTeX

    @article{chiang1976,
    	title = "On the sex of the prothalli of Ceratopteris pteridoides (Hook.) Hieron",
    	author = "Chiang , Y.L.",
    	journal = "Taiwania",
    	year = 1976,
    	pages = "134-137",
    	volume = 21
    }
    
  30. Y -L Chiang. Macro- and microscopic structure of the root of Ceratopteris pteridoides (Hook.) Hieron.. Taiwania 15:31-49, 1970.
    BibTeX

    @article{chiang1970,
    	title = "Macro- and microscopic structure of the root of Ceratopteris pteridoides (Hook.) Hieron.",
    	author = "Chiang , Y.-L.",
    	journal = "Taiwania",
    	year = 1970,
    	pages = "31-49",
    	volume = 15
    }
    
  31. P T Chun and L G Hickok. Inheritance of two mutations conferring glyphosate tolerance in the fern Ceratopteris richardii. Canadian Journal of Botany 70:1097-1099, 1992.
    BibTeX

    @article{chun1992,
    	title = "Inheritance of two mutations conferring glyphosate tolerance in the fern Ceratopteris richardii",
    	author = "Chun , P.T. and Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1992,
    	pages = "1097-1099",
    	volume = 70
    }
    
  32. M Constantinescu. Some notes on the behavior of some tropical aquatic plants in greenhouse conditions. I. Nymphaea lotus var. thermalis, Sagittaria subulata, Ceratopteris thalictroides Unele insemnari asupra comportarii unor plante acvatice tropicale in conditii de sera. I. Lucr. Gradina Botanica Bucuresti Acta Botanica Horticultura Bucuresti, pages 63-65, 1977.
    BibTeX

    @article{constantinescu1977,
    	title = "Some notes on the behavior of some tropical aquatic plants in greenhouse conditions. I. Nymphaea lotus var. thermalis, Sagittaria subulata, Ceratopteris thalictroides Unele insemnari asupra comportarii unor plante acvatice tropicale in conditii de sera",
    	author = "Constantinescu , M.",
    	journal = "I. Lucr. Gradina Botanica Bucuresti Acta Botanica Horticultura Bucuresti",
    	year = 1977,
    	pages = "63-65"
    }
    
  33. T J Cooke, L G Hickok and M Sugai. The fern Ceratopteris richardii as a lower plant model system for studying the genetic regulation of plant photomorphogenesis. International Journal of Plant Science 156:367-373, 1995.
    BibTeX

    @article{cooke1995,
    	title = "The fern Ceratopteris richardii as a lower plant model system for studying the genetic regulation of plant photomorphogenesis",
    	author = "Cooke , T.J. and Hickok , L.G. and Sugai , M.",
    	journal = "International Journal of Plant Science",
    	year = 1995,
    	pages = "367-373",
    	volume = 156
    }
    
  34. T J Cooke, L G Hickok, W J V D Woude, J A Banks and R J Scott. Photobiological characterization of a spore germination mutant dkg1 with reversed photoregulation in the fern Ceratopteris richardii. Photochemistry and Photobiology 57:1032-1041, 1993.
    BibTeX

    @article{cooke1993,
    	title = "Photobiological characterization of a spore germination mutant dkg1 with reversed photoregulation in the fern Ceratopteris richardii",
    	author = "Cooke , T.J. and Hickok , L.G. and Woude , W.J.V.D. and Banks , J.A. and Scott , R.J.",
    	journal = "Photochemistry and Photobiology",
    	year = 1993,
    	pages = "1032-1041",
    	volume = 57
    }
    
  35. T J Cooke, R H Racusen, L G Hickok and T R Warne. The photocontrol of spore germination in the fern Ceratopteris richardii. Plant Cell Physiology 28:753-759, 1987.
    BibTeX

    @article{cooke1987,
    	title = "The photocontrol of spore germination in the fern Ceratopteris richardii",
    	author = "Cooke , T.J. and Racusen , R.H. and Hickok , L.G. and Warne , T.R.",
    	journal = "Plant Cell Physiology",
    	year = 1987,
    	pages = "753-759",
    	volume = 28
    }
    
  36. E B Copeland. Edible ferns. American Fern Journal 32:121-126, 1942.
    BibTeX

    @article{copeland1942,
    	title = "Edible ferns",
    	author = "Copeland , E.B.",
    	journal = "American Fern Journal",
    	year = 1942,
    	pages = "121-126",
    	volume = 32
    }
    
  37. A R Cordle, E E Irish and C L Cheng. Apogamy induction in Ceratopteris richardii. International Journal of Plant Sciences 168:361–369, 2007.
    BibTeX

    @article{cordle2007,
    	title = "Apogamy induction in Ceratopteris richardii",
    	author = "Cordle , A. R. and Irish , E. E. and Cheng , C. L.",
    	journal = "International Journal of Plant Sciences",
    	year = 2007,
    	pages = "361--369",
    	volume = 168
    }
    
  38. M E Dettmann and H T Clifford. Spore morphology of Anemia, Mohria, and Ceratopteris (Filicales). American Journal of Botany 78:303-325, 1991.
    BibTeX

    @article{dettmann1991,
    	title = "Spore morphology of Anemia, Mohria, and Ceratopteris (Filicales)",
    	author = "Dettmann , M.E. and Clifford , H.T.",
    	journal = "American Journal of Botany",
    	year = 1991,
    	pages = "303-325",
    	volume = 78
    }
    
  39. B DeYoung, T Weber and J A Banks. Generating autotetraploid sporophytes and their use in analyzing mutations affecting gemetophyte development in the fern Ceratopteris. Genetics 147:809-814, 1997.
    BibTeX

    @article{deyoung1997,
    	title = "Generating autotetraploid sporophytes and their use in analyzing mutations affecting gemetophyte development in the fern Ceratopteris",
    	author = "DeYoung , B. and Weber , T. and Banks , J.A.",
    	journal = "Genetics",
    	year = 1997,
    	pages = "809-814",
    	volume = 147
    }
    
  40. Y H Dong, J M Chen, W Robert and Q F Wang. Gene flow in populations of the endangered aquatic fern Ceratopteris pteridoides in China as revealed by ISSR markers.. Aquatic Botany 87:69–74, 2007.
    BibTeX

    @article{dong2007,
    	title = "Gene flow in populations of the endangered aquatic fern Ceratopteris pteridoides in China as revealed by ISSR markers.",
    	author = "Dong , Y. H. and Chen , J. M. and Robert , W. and Wang , Q. F.",
    	journal = "Aquatic Botany",
    	year = 2007,
    	pages = "69--74",
    	volume = 87
    }
    
  41. Y-H Dong, J-M Chen, G W Robert and Q-F Wang. Genetic variation in the endangered aquatic fern Ceratopteris thalictroides (Parkeriaceae) in China: implications from RAPD and ISSR data. Botanical Journal of the Linnean Society 157(4):657-671, 2008.
    Abstract The genetic diversity within and among 13 populations of the endangered aquatic fern Ceratopteris thalictroides from five regions of China was investigated using random amplification of polymorphic DNA (RAPD) and intersimple sequence repeat (ISSR) markers. The percentages of polymorphic bands were 61% for RAPD and 65% for ISSR. The genetic diversity revealed by RAPD and ISSR varied greatly among populations, with the percentages of polymorphic bands ranging from 15% to 39% for RAPD and from 20% to 39% for ISSR. Analysis of molecular variance showed that 36% (RAPD) and 34% (ISSR) of variability was partitioned among populations. The results indicate that C. thalictroides possesses an intermediate level of genetic diversity at the species level and a low level of genetic differentiation among populations. The Mantel test showed no significant correlation between genetic distance and geographical distance (RAPD, r = 0.53; ISSR, r = 0.18) and, similarly, a very poor fit between the two markers (r = 0.24). A number of causes, including inbreeding and clonal growth, may have led to the low genetic diversity within populations. A high gene flow via spore dispersal in an earlier period when C. thalictroides was widely distributed in China is a plausible reason for the low genetic differentiation among populations. Strategies for the conservation of the species in China are discussed.
    BibTeX

    @article{dong-b-2008,
    	title = "Genetic variation in the endangered aquatic fern Ceratopteris thalictroides (Parkeriaceae) in China: implications from RAPD and ISSR data",
    	author = "Dong , Y-H. and Chen , J-M. and Robert , G.W. and Wang , Q-F.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 2008,
    	number = 4,
    	pages = "657-671",
    	volume = 157,
    	abstract = "The genetic diversity within and among 13 populations of the endangered aquatic fern Ceratopteris thalictroides from five regions of China was investigated using random amplification of polymorphic DNA (RAPD) and intersimple sequence repeat (ISSR) markers. The percentages of polymorphic bands were 61% for RAPD and 65% for ISSR. The genetic diversity revealed by RAPD and ISSR varied greatly among populations, with the percentages of polymorphic bands ranging from 15% to 39% for RAPD and from 20% to 39% for ISSR. Analysis of molecular variance showed that 36% (RAPD) and 34% (ISSR) of variability was partitioned among populations. The results indicate that C. thalictroides possesses an intermediate level of genetic diversity at the species level and a low level of genetic differentiation among populations. The Mantel test showed no significant correlation between genetic distance and geographical distance (RAPD, r = 0.53; ISSR, r = 0.18) and, similarly, a very poor fit between the two markers (r = 0.24). A number of causes, including inbreeding and clonal growth, may have led to the low genetic diversity within populations. A high gene flow via spore dispersal in an earlier period when C. thalictroides was widely distributed in China is a plausible reason for the low genetic differentiation among populations. Strategies for the conservation of the species in China are discussed."
    }
    
  42. J v Donselaar. On the distribution and ecology of Ceratopteris in Surinam. American Fern Journal 59:3-8, 1969.
    BibTeX

    @article{donselaar1969,
    	title = "On the distribution and ecology of Ceratopteris in Surinam",
    	author = "Donselaar , J.v.",
    	journal = "American Fern Journal",
    	year = 1969,
    	pages = "3-8",
    	volume = 59
    }
    
  43. J G Duckett, E J Klekowski and L G Hickok. Ultrastructural studies of mutant spermatozoids in ferns. I. The mature nonmotile spermatozoid of mutation 230X in Ceratopteris thalictroides (L.) Brongn.. Gamete Research 2:317-343, 1979.
    BibTeX

    @article{duckett1979,
    	title = "Ultrastructural studies of mutant spermatozoids in ferns. I. The mature nonmotile spermatozoid of mutation 230X in Ceratopteris thalictroides (L.) Brongn.",
    	author = "Duckett , J.G. and Klekowski , E.J. and Hickok , L.G.",
    	journal = "Gamete Research",
    	year = 1979,
    	pages = "317-343",
    	volume = 2
    }
    
  44. J Eberle and J Banks. Genetic interactions among sex-determining genes in the fern Ceratopteris. Genetics 142, 1996.
    BibTeX

    @article{eberle1996,
    	title = "Genetic interactions among sex-determining genes in the fern Ceratopteris",
    	author = "Eberle , J. and Banks , J.",
    	journal = "Genetics",
    	year = 1996,
    	volume = 142
    }
    
  45. J Eberle, J Nemacheck, C K Wen, M Hasebe and J A Banks. Ceratopteris: A model system for studying sex-determining mechanisms in plants. International Journal of Plant Science 156:359-366, 1995.
    BibTeX

    @article{eberle1995,
    	title = "Ceratopteris: A model system for studying sex-determining mechanisms in plants",
    	author = "Eberle , J. and Nemacheck , J. and Wen , C.K. and Hasebe , M. and Banks , J.A.",
    	journal = "International Journal of Plant Science",
    	year = 1995,
    	pages = "359-366",
    	volume = 156
    }
    
  46. E S Edwards and S J Roux. Influence of gravity and light on the developmental polarity of Ceratopteris richardii fern spores. Planta 205:553-560, 1998.
    BibTeX

    @article{edwards1998a,
    	title = "Influence of gravity and light on the developmental polarity of Ceratopteris richardii fern spores",
    	author = "Edwards , E.S. and Roux , S.J.",
    	journal = "Planta",
    	year = 1998,
    	pages = "553-560",
    	volume = 205
    }
    
  47. E S Edwards and S J Roux. Gravity and light control of the developmental polarity of regenerating protoplasts isolated from prothallial cells of the fern Ceratopteris richardii. Plant Cell Reports 17:711-716, 1998.
    BibTeX

    @article{edwards1998b,
    	title = "Gravity and light control of the developmental polarity of regenerating protoplasts isolated from prothallial cells of the fern Ceratopteris richardii",
    	author = "Edwards , E.S. and Roux , S.J.",
    	journal = "Plant Cell Reports",
    	year = 1998,
    	pages = "711-716",
    	volume = 17
    }
    
  48. E S Edwards and S J Roux. The influence of gravity and light on developmental polarity of single cells of Ceratopteris richardii gametophytes. The Biological Bulletin 192:139-40, 1997.
    BibTeX

    @article{edwards1997,
    	title = "The influence of gravity and light on developmental polarity of single cells of Ceratopteris richardii gametophytes",
    	author = "Edwards , E.S. and Roux , S.J.",
    	journal = "The Biological Bulletin",
    	year = 1997,
    	pages = "139-40",
    	volume = 192,
    	eprint = "http://www.c-fern.org/docs/Edwards_Roux_1997.pdf"
    }
    
  49. E S Edwards and S J Roux. Limited period of graviresponsiveness in germinating spores of Ceratopteris richardii. Planta 195:150-152, 1994.
    BibTeX

    @article{edwards1994,
    	title = "Limited period of graviresponsiveness in germinating spores of Ceratopteris richardii",
    	author = "Edwards , E.S. and Roux , S.J.",
    	journal = "Planta",
    	year = 1994,
    	pages = "150-152",
    	volume = 195
    }
    
  50. A G Endress. Spore germination of Ceratopteris thalictroides (L.) Brongn.. Annals of Botany 38:877-881, 1974.
    BibTeX

    @article{endress1974,
    	title = "Spore germination of Ceratopteris thalictroides (L.) Brongn.",
    	author = "Endress , A.G.",
    	journal = "Annals of Botany",
    	year = 1974,
    	pages = "877-881",
    	volume = 38
    }
    
  51. S O Ford. The anatomy of Ceratopteris thalictroides (L.) Brongn.. Annals of Botany 16:95-121, 1902.
    BibTeX

    @article{ford1902,
    	title = "The anatomy of Ceratopteris thalictroides (L.) Brongn.",
    	author = "Ford , S.O.",
    	journal = "Annals of Botany",
    	year = 1902,
    	pages = "95-121",
    	volume = 16
    }
    
  52. E P Fuerst and K C Vaughn. Mechanisms of paraquat resistance. Weed Technology Journal 4:150-156, 1990.
    BibTeX

    @article{fuerst1990,
    	title = "Mechanisms of paraquat resistance",
    	author = "Fuerst , E.P. and Vaughn , K.C.",
    	journal = "Weed Technology Journal",
    	year = 1990,
    	pages = "150-156",
    	volume = 4
    }
    
  53. P Garg and S Devi. Ultrastructural changes due to cadmium toxicity in some fern gametophytes. Indian Fern Journal 11:1-6, 1994.
    BibTeX

    @article{garg1994,
    	title = "Ultrastructural changes due to cadmium toxicity in some fern gametophytes",
    	author = "Garg , P. and Devi , S.",
    	journal = "Indian Fern Journal",
    	year = 1994,
    	pages = "1-6",
    	volume = 11
    }
    
  54. Jr. E M Gifford, V S Polito and S Nitayangkura. The apical cell in shoots and roots of certain ferns Ceratopteris thalictroides, Azolla filiculoides, Bryophyta: a re-evaluation of its functional role in histogenesis. Plant Science Letters 15:305-311, 1979.
    BibTeX

    @article{gifford1979,
    	title = "The apical cell in shoots and roots of certain ferns Ceratopteris thalictroides, Azolla filiculoides, Bryophyta: a re-evaluation of its functional role in histogenesis",
    	author = "Gifford , E.M. Jr. and Polito , V.S. and Nitayangkura , S.",
    	journal = "Plant Science Letters",
    	year = 1979,
    	pages = "305-311",
    	volume = 15
    }
    
  55. J E Gottlieb. Control of marginal leaf meristem growth in Ceratopteris. American Journal of Botany (Abstract) 50:614, 1963.
    BibTeX

    @article{gottlieb1963,
    	title = "Control of marginal leaf meristem growth in Ceratopteris",
    	author = "Gottlieb , J.E.",
    	journal = "American Journal of Botany (Abstract)",
    	year = 1963,
    	pages = 614,
    	volume = 50
    }
    
  56. A Graham. Studies in neotropical paleobotany IV. The Eocene communities of Panama. Annals of the Missouri Botanical Garden 72:504-534, 1985.
    BibTeX

    @article{graham1985,
    	title = "Studies in neotropical paleobotany IV. The Eocene communities of Panama",
    	author = "Graham , A.",
    	journal = "Annals of the Missouri Botanical Garden",
    	year = 1985,
    	pages = "504-534",
    	volume = 72
    }
    
  57. M Gregorich and R Fisher. Auxin regulates lateral meristem activation in developing gametophytes of Ceratopteris richardii. Canadian Journal of Botany 84:1520-1530, 2006.
    BibTeX

    @article{gregorich2006,
    	title = "Auxin regulates lateral meristem activation in developing gametophytes of Ceratopteris richardii",
    	author = "Gregorich , M. and Fisher , R.",
    	journal = "Canadian Journal of Botany",
    	year = 2006,
    	pages = "1520-1530",
    	volume = 84
    }
    
  58. M Gupta, S Devi and J Singh. Effects of long-term low-dose exposure to cadmium during the entire life cycle of Ceratopteris thalictroides, a water fern. Archives of Environmental Contamination and Toxicology 23:184-189, 1992.
    BibTeX

    @article{gupta1992,
    	title = "Effects of long-term low-dose exposure to cadmium during the entire life cycle of Ceratopteris thalictroides, a water fern",
    	author = "Gupta , M. and Devi , S. and Singh , J.",
    	journal = "Archives of Environmental Contamination and Toxicology",
    	year = 1992,
    	pages = "184-189",
    	volume = 23
    }
    
  59. R Hamilton and C Chaffin. The effect of surface sterilization on cultures of Ceratopteris richardii gametophytes. American Fern Journal 88:81-85, 1998.
    BibTeX

    @article{hamilton1998,
    	title = "The effect of surface sterilization on cultures of Ceratopteris richardii gametophytes",
    	author = "Hamilton , R. and Chaffin , C.",
    	journal = "American Fern Journal",
    	year = 1998,
    	pages = "81-85",
    	volume = 88
    }
    
  60. H H Hannen. The introduction and establishment of Ceratopteris in Texas. American Fern Journal 58:122, 1968.
    BibTeX

    @article{hannen1968,
    	title = "The introduction and establishment of Ceratopteris in Texas",
    	author = "Hannen , H.H.",
    	journal = "American Fern Journal",
    	year = 1968,
    	pages = 122,
    	volume = 58
    }
    
  61. M Hasebe, C K Wen, M Kato and J A Banks. Characterization of MADS homeotic genes in the fern Ceratopteris richardii. Proceedings of the National Academy of Sciences 95(11):6222–6227, 1998.
    BibTeX

    @article{hasebe1998cmh,
    	title = "Characterization of MADS homeotic genes in the fern {Ceratopteris richardii}",
    	author = "Hasebe , M. and Wen , C.K. and Kato , M. and Banks , J.A.",
    	journal = "Proceedings of the National Academy of Sciences",
    	year = 1998,
    	number = 11,
    	pages = "6222--6227",
    	volume = 95,
    	publisher = "National Acad Sciences"
    }
    
  62. R Hebant-Mauri. Apical segmentation and leaf initiation in Ceratopteris thalictroides (a leptosporangiate fern). Canadian Journal of Botany 55:1820-1828, 1977.
    BibTeX

    @article{henat-mauri1977,
    	title = "Apical segmentation and leaf initiation in Ceratopteris thalictroides (a leptosporangiate fern)",
    	author = "Hebant-Mauri , R.",
    	journal = "Canadian Journal of Botany",
    	year = 1977,
    	pages = "1820-1828",
    	volume = 55
    }
    
  63. H M LeBaron, R O Mumma, R C Honeycutt and J H Duesing (eds.). Applications of in vitro selection systems: whole plant selection using the haploid phase of the fern Ceratopteris. pages 53-65, American Chemical Society, 1987.
    BibTeX

    @inbook{hickok1987b,
    	title = "Applications of in vitro selection systems: whole plant selection using the haploid phase of the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	editor = "LeBaron, H.M. and Mumma, R.O. and Honeycutt, R.C. and Duesing, J.H.",
    	pages = "53-65",
    	publisher = "American Chemical Society",
    	year = 1987,
    	booktitle = "Biotechnology in agricultural chemistry"
    }
    
  64. L G Hickok. Abscisic acid resistant mutants in the fern Ceratopteris: characterization and genetic analysis. Canadian Journal of Botany 63:1582-1585, 1985.
    BibTeX

    @article{hickok1985,
    	title = "Abscisic acid resistant mutants in the fern Ceratopteris: characterization and genetic analysis",
    	author = "Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1985,
    	pages = "1582-1585",
    	volume = 63
    }
    
  65. L G Hickok. Abscisic acid blocks antheridiogen-induced antheridium formation in gametophytes of the fern Ceratopteris. Canadian Journal of Botany 61:888-892, 1983.
    BibTeX

    @article{hickok1983,
    	title = "Abscisic acid blocks antheridiogen-induced antheridium formation in gametophytes of the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1983,
    	pages = "888-892",
    	volume = 61
    }
    
  66. L G Hickok. Apogamy and somatic restitution in the fern Ceratopteris. American Journal of Botany 66:1074-1078, 1979.
    BibTeX

    @article{hickok1979a,
    	title = "Apogamy and somatic restitution in the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "American Journal of Botany",
    	year = 1979,
    	pages = "1074-1078",
    	volume = 66
    }
    
  67. L G Hickok. A cytological study of intraspecific variation in Ceratopteris thalictroides. Canadian Journal of Botany 57:1694-1700, 1979.
    BibTeX

    @article{hickok1979b,
    	title = "A cytological study of intraspecific variation in Ceratopteris thalictroides",
    	author = "Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1979,
    	pages = "1694-1700",
    	volume = 57
    }
    
  68. L G Hickok. Homoeologous chromosome pairing and restricted segregation in the fern Ceratopteris. American Journal of Botany 65:516-521, 1978.
    BibTeX

    @article{hickok1978,
    	title = "Homoeologous chromosome pairing and restricted segregation in the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "American Journal of Botany",
    	year = 1978,
    	pages = "516-521",
    	volume = 65
    }
    
  69. L G Hickok. An apomictic mutant for sticky chromosomes in the fern Ceratopteris. Canadian Journal of Botany 55:2186-2195, 1977.
    BibTeX

    @article{hickok1977a,
    	title = "An apomictic mutant for sticky chromosomes in the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1977,
    	pages = "2186-2195",
    	volume = 55
    }
    
  70. L G Hickok. The cytology and derivation of a temperature-sensitive meiotic mutant in the fern Ceratopteris. American Journal of Botany 64:552-563, 1977.
    BibTeX

    @article{hickok1977b,
    	title = "The cytology and derivation of a temperature-sensitive meiotic mutant in the fern Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "American Journal of Botany",
    	year = 1977,
    	pages = "552-563",
    	volume = 64
    }
    
  71. L G Hickok. Cytological relationships between three diploid species of the fern genus Ceratopteris. Canadian Journal of Botany 55:1660-1667, 1976.
    BibTeX

    @article{hickok1976,
    	title = "Cytological relationships between three diploid species of the fern genus Ceratopteris",
    	author = "Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1976,
    	pages = "1660-1667",
    	volume = 55
    }
    
  72. L G Hickok and R M Kiriluk. Effects of auxins on gametophyte development and sexual differentiation in the fern Ceratopteris thalictroides (L.) Brongn.. Botanical Gazette 145:37-42, 1984.
    BibTeX

    @article{hickok1984,
    	title = "Effects of auxins on gametophyte development and sexual differentiation in the fern Ceratopteris thalictroides (L.) Brongn.",
    	author = "Hickok , L.G. and Kiriluk , R.M.",
    	journal = "Botanical Gazette",
    	year = 1984,
    	pages = "37-42",
    	volume = 145
    }
    
  73. L G Hickok and E J Klekowski. Inchoate speciation in Ceratopteris: An analysis of the synthesized hybrid C. richardii x C. pteridoides. Evolution 28:439-446, 1974.
    BibTeX

    @article{hickok1974,
    	title = "Inchoate speciation in Ceratopteris: An analysis of the synthesized hybrid C. richardii x C. pteridoides",
    	author = "Hickok , L.G. and Klekowski , E.J.",
    	journal = "Evolution",
    	year = 1974,
    	pages = "439-446",
    	volume = 28
    }
    
  74. L G Hickok and E J Klekowski. Abnormal reductional and nonreductional meiosis in Ceratopteris: Alternatives to homozygosity and hybrid sterility in homosporous ferns. American Journal of Botany 60:1010-1022, 1973.
    BibTeX

    @article{hickok1973,
    	title = "Abnormal reductional and nonreductional meiosis in Ceratopteris: Alternatives to homozygosity and hybrid sterility in homosporous ferns",
    	author = "Hickok , L.G. and Klekowski , E.J.",
    	journal = "American Journal of Botany",
    	year = 1973,
    	pages = "1010-1022",
    	volume = 60
    }
    
  75. L G Hickok and O J Schwarz. Genetic characterization of a mutation that enhances paraquat tolerance in the fern Ceratopteris richardii. Theoretical and Applied Genetics 77:200-204, 1989.
    BibTeX

    @article{hickok1989,
    	title = "Genetic characterization of a mutation that enhances paraquat tolerance in the fern Ceratopteris richardii",
    	author = "Hickok , L.G. and Schwarz , O.J.",
    	journal = "Theoretical and Applied Genetics",
    	year = 1989,
    	pages = "200-204",
    	volume = 77
    }
    
  76. L G Hickok and O J Schwarz. Paraquat tolerant mutants in Ceratopteris: genetic characterization and reselection for enhanced tolerance. Plant Science 47:153-158, 1986.
    BibTeX

    @article{hickok1986,
    	title = "Paraquat tolerant mutants in Ceratopteris: genetic characterization and reselection for enhanced tolerance",
    	author = "Hickok , L.G. and Schwarz , O.J.",
    	journal = "Plant Science",
    	year = 1986,
    	pages = "153-158",
    	volume = 47
    }
    
  77. L G Hickok, D L Vogelien and T R Warne. Selection of a mutation conferring high NaCl tolerance to gametophytes of Ceratopteris. Theoretical and Applied Genetics 81:293-300, 1991.
    BibTeX

    @article{hickok1991,
    	title = "Selection of a mutation conferring high NaCl tolerance to gametophytes of Ceratopteris",
    	author = "Hickok , L.G. and Vogelien , D.L. and Warne , T.R.",
    	journal = "Theoretical and Applied Genetics",
    	year = 1991,
    	pages = "293-300",
    	volume = 81
    }
    
  78. L G Hickok and T R Warne. Short-circuiting the fern life cycle: apospory in Ceratopteris richardii. , pages 397-405, 2000.
    BibTeX

    @article{hickok2000,
    	title = "Short-circuiting the fern life cycle: apospory in Ceratopteris richardii",
    	author = "Hickok , L.G. and Warne , T.R.",
    	year = 2000,
    	pages = "397-405",
    	address = "New York",
    	booktitle = "Plant Tissue Culture Concepts and Laboratory Exercises",
    	edition = "2nd",
    	editor = "Trigiano, R. and Gray, D.",
    	publisher = "CRC Press"
    }
    
  79. L G Hickok and T R Warne. C-Fern Manual. Burlington, NC, 1998.
    BibTeX

    @manual{hickok1998,
    	title = "C-Fern Manual",
    	address = "Burlington, NC",
    	author = "Hickok , L.G. and Warne , T.R.",
    	year = 1998,
    	publisher = "Carolina Biological Supply Company"
    }
    
  80. L G Hickok, T R Warne, S L Baxter and C T Melear. Sex and the C-Fern: Not just another life cycle. BioScience 48:1031-1037, 1998.
    BibTeX

    @article{hickok-b-1998,
    	title = "Sex and the C-Fern: Not just another life cycle",
    	author = "Hickok , L.G. and Warne , T.R. and Baxter , S.L. and Melear , C.T.",
    	journal = "BioScience",
    	year = 1998,
    	pages = "1031-1037",
    	volume = 48
    }
    
  81. L G Hickok, T R Warne and R S Fribourg. The biology of the fern Ceratopteris and its use as a model system. International Journal of Plant Sciences 156(3):332–345, 1995.
    BibTeX

    @article{hickok1995bfc,
    	title = "The biology of the fern Ceratopteris and its use as a model system",
    	author = "Hickok , L.G. and Warne , T.R. and Fribourg , R.S.",
    	journal = "International Journal of Plant Sciences",
    	year = 1995,
    	number = 3,
    	pages = "332--345",
    	volume = 156,
    	publisher = "JSTOR"
    }
    
  82. L G Hickok, T R Warne and M K Slocum. Ceratopteris richardii: Applications for experimental plant biology. American Journal of Botany 74:1304-1316, 1987.
    BibTeX

    @article{hickok1987a,
    	title = "Ceratopteris richardii: Applications for experimental plant biology",
    	author = "Hickok , L.G. and Warne , T.R. and Slocum , M.K.",
    	journal = "American Journal of Botany",
    	year = 1987,
    	pages = "1304-1316",
    	volume = 74
    }
    
  83. J P Hill. Meristem development at the sporophyll pinna apex in Ceratopteris richardii. International Journal of Plant Sciences 162(2):235-247, 2001.
    BibTeX

    @article{hill2001,
    	title = "Meristem development at the sporophyll pinna apex in Ceratopteris richardii",
    	author = "Hill , J.P.",
    	journal = "International Journal of Plant Sciences",
    	year = 2001,
    	number = 2,
    	pages = "235-247",
    	volume = 162
    }
    
  84. J C Hoffman and K C Vaughn. Spline and flagellar microtubules are resistant to mitotic disrupter herbicides. Protoplasma 192:57-69, 1996.
    BibTeX

    @article{hoffman1996,
    	title = "Spline and flagellar microtubules are resistant to mitotic disrupter herbicides",
    	author = "Hoffman , J.C. and Vaughn , K.C.",
    	journal = "Protoplasma",
    	year = 1996,
    	pages = "57-69",
    	volume = 192
    }
    
  85. J C Hoffman and K C Vaughn. Using the developing spermatogenous cells of Ceratopteris to unlock the mysteries of the plant cytoskeleton. International Journal of Plant Science 156:346-358, 1995.
    BibTeX

    @article{hoffman1995a,
    	title = "Using the developing spermatogenous cells of Ceratopteris to unlock the mysteries of the plant cytoskeleton",
    	author = "Hoffman , J.C. and Vaughn , K.C.",
    	journal = "International Journal of Plant Science",
    	year = 1995,
    	pages = "346-358",
    	volume = 156
    }
    
  86. J C Hoffman and K C Vaughn. Post-translational tubulin modifications in spermatogeneous cells of the pteridophyte Ceratopteris richardii. Protoplasma 186:169, 1995.
    BibTeX

    @article{hoffman1995b,
    	title = "Post-translational tubulin modifications in spermatogeneous cells of the pteridophyte Ceratopteris richardii",
    	author = "Hoffman , J.C. and Vaughn , K.C.",
    	journal = "Protoplasma",
    	year = 1995,
    	pages = 169,
    	volume = 186
    }
    
  87. J C Hoffman, K C Vaughn and H C Joshi. Structural and immunocytochemical characterization of microtubule organizing centers in pteridophyte spermatogenous cells. Protoplasma 179:46-60, 1994.
    BibTeX

    @article{hoffman1994,
    	title = "Structural and immunocytochemical characterization of microtubule organizing centers in pteridophyte spermatogenous cells",
    	author = "Hoffman , J.C. and Vaughn , K.C. and Joshi , H.C.",
    	journal = "Protoplasma",
    	year = 1994,
    	pages = "46-60",
    	volume = 179
    }
    
  88. G Hou and J P Hill. Developmental anatomy of the fifth shoot-borne root of Ceratopteris richardii. Planta 219:212-220, 2004.
    BibTeX

    @article{hou2004a,
    	title = "Developmental anatomy of the fifth shoot-borne root of Ceratopteris richardii",
    	author = "Hou , G. and Hill , J.P.",
    	journal = "Planta",
    	year = 2004,
    	pages = "212-220",
    	volume = 219
    }
    
  89. G Hou and J P Hill. Heteroblastic root development in Ceratopteris richardii (Parkeriaceae). International Journal of Plant Sciences 163:341-351, 2002.
    BibTeX

    @article{hou2002,
    	title = "Heteroblastic root development in Ceratopteris richardii (Parkeriaceae)",
    	author = "Hou , G. and Hill , J.P.",
    	journal = "International Journal of Plant Sciences",
    	year = 2002,
    	pages = "341-351",
    	volume = 163
    }
    
  90. G Hou, J P Hill and E B Blancaflor. Developmental anatomy and auxin response of lateral root formation of Ceratopteris richardii. Journal of Experimental Botany 55(397):685-693, 2004.
    BibTeX

    @article{hou2004b,
    	title = "Developmental anatomy and auxin response of lateral root formation of Ceratopteris richardii",
    	author = "Hou , G. and Hill , J. P. and Blancaflor , E.B.",
    	journal = "Journal of Experimental Botany",
    	year = 2004,
    	number = 397,
    	pages = "685-693",
    	volume = 55
    }
    
  91. M D Howe. Origin of leaf and adventitious and secondary roots of Ceratopteris thalictroides. Botanical Gazette 62:326-329, 1931.
    BibTeX

    @article{howe1931,
    	title = "Origin of leaf and adventitious and secondary roots of Ceratopteris thalictroides",
    	author = "Howe , M.D.",
    	journal = "Botanical Gazette",
    	year = 1931,
    	pages = "326-329",
    	volume = 62
    }
    
  92. T C Huang. Ceratopteris taiwanensis Huang sp. nov.. Botanical Bulletin of the Academica Sinica 18:78-81, 1977.
    BibTeX

    @article{huang1977,
    	title = "Ceratopteris taiwanensis Huang sp. nov.",
    	author = "Huang , T.C.",
    	journal = "Botanical Bulletin of the Academica Sinica",
    	year = 1977,
    	pages = "78-81",
    	volume = 18
    }
    
  93. S R Javalgekar. Sporogenesis and prothallial development in Ceratopteris thalictroides. Botanical Gazette 122:45-50, 1960.
    BibTeX

    @article{javalgekar1960,
    	title = "Sporogenesis and prothallial development in Ceratopteris thalictroides",
    	author = "Javalgekar , S.R.",
    	journal = "Botanical Gazette",
    	year = 1960,
    	pages = "45-50",
    	volume = 122
    }
    
  94. H Kamachi, O Iwasawa, L G Hickok, M Nakayama, M Noguchi and H Inoue. The effects of light on sex determination in gametophytes of the fern Ceratopteris richardii. Journal of Plant Research 120:629–634, 2007.
    BibTeX

    @article{kamachi2007,
    	title = "The effects of light on sex determination in gametophytes of the fern Ceratopteris richardii",
    	author = "Kamachi , H. and Iwasawa , O. and Hickok , L. G. and Nakayama , M. and Noguchi , M. and Inoue , H.",
    	journal = "Journal of Plant Research",
    	year = 2007,
    	pages = "629--634",
    	volume = 120
    }
    
  95. H Kamachi, E Matsunaga, M Noguchi and H Inoue. Novel mutant phenotypes of a dark-germinating mutant dkg1 in the fern Ceratopteris richardii. Journal of Plant Research 117(2):163-170, 2004.
    Abstract The mutant dark-germinating 1 (dkg1) of the fern Ceratopteris richardii was originally characterized by two phenotypes, germination in the dark and inhibition of germination by light. In this work, we examined whether other phenotypes are present in the gametophytic generation of the dkg1 mutant. Although dkg1 prothalli grown in darkness were elongated as in the case of the wild type, some developmental processes were found to proceed even in complete darkness: (1) the apical and subapical zones developed largely by forming a lateral meristem; (2) asymmetric cell division for rhizoid differentiation occurred in the subapical elongation zone; (3) an archegonium was formed in the proximity of the meristem; and (4) chloroplast relocation could occur without de novo protein synthesis. Furthermore, these processes were shown to be under the control of phytochrome in the wild-type gametophytes on the basis of red/far-red reversibility. These results indicate that the DKG1 gene is pleiotropic and is involved in several phytochrome-mediated responses in the gametophyte development of C. richardii.
    BibTeX

    @article{kamachi2004,
    	title = "Novel mutant phenotypes of a dark-germinating mutant dkg1 in the fern Ceratopteris richardii",
    	author = "Kamachi , H. and Matsunaga , E. and Noguchi , M. and Inoue , H.",
    	journal = "Journal of Plant Research",
    	year = 2004,
    	number = 2,
    	pages = "163-170",
    	volume = 117,
    	abstract = "The mutant dark-germinating 1 (dkg1) of the fern Ceratopteris richardii was originally characterized by two phenotypes, germination in the dark and inhibition of germination by light. In this work, we examined whether other phenotypes are present in the gametophytic generation of the dkg1 mutant. Although dkg1 prothalli grown in darkness were elongated as in the case of the wild type, some developmental processes were found to proceed even in complete darkness: (1) the apical and subapical zones developed largely by forming a lateral meristem; (2) asymmetric cell division for rhizoid differentiation occurred in the subapical elongation zone; (3) an archegonium was formed in the proximity of the meristem; and (4) chloroplast relocation could occur without de novo protein synthesis. Furthermore, these processes were shown to be under the control of phytochrome in the wild-type gametophytes on the basis of red/far-red reversibility. These results indicate that the DKG1 gene is pleiotropic and is involved in several phytochrome-mediated responses in the gametophyte development of C. richardii."
    }
    
  96. R K Kar. On the original homeland of Ceratopteris Brong. and its palaeogeographical province aquatic ferns. Geophytology 12:340-341, 1982.
    BibTeX

    @article{kar1982,
    	title = "On the original homeland of Ceratopteris Brong. and its palaeogeographical province aquatic ferns",
    	author = "Kar , R.K.",
    	journal = "Geophytology",
    	year = 1982,
    	pages = "340-341",
    	volume = 12
    }
    
  97. D Karlson and R Imai. Conservation of the cold shock domain protein family in plants. Plant Physiology 131(1):12-15, 2003.
    BibTeX

    @article{karlson2003,
    	title = "Conservation of the cold shock domain protein family in plants",
    	author = "Karlson , D. and Imai , R.",
    	journal = "Plant Physiology",
    	year = 2003,
    	number = 1,
    	pages = "12-15",
    	volume = 131
    }
    
  98. H Karnachi, O Iwasawa, L G Hickok, M Nakayama and H Inoue. Blue light promotes male development in the gametophytes of the fern Ceratopteris richardii. Plant and Cell Physiology 48 (Suppl. S):S153, 2007.
    Abstract [Abstract]
    BibTeX

    @article{karnachi2007,
    	title = "Blue light promotes male development in the gametophytes of the fern Ceratopteris richardii",
    	author = "Karnachi , H. and Iwasawa , O. and Hickok , L. G. and Nakayama , M. and Inoue , H.",
    	journal = "Plant and Cell Physiology",
    	year = 2007,
    	pages = "S153",
    	volume = "48 (Suppl. S)",
    	abstract = "[Abstract]"
    }
    
  99. A Kazmierczak. Sex determination in homosporous ferns. Postepy Biologii Komorki 34:103–122, 2007.
    Abstract Polish; Anemia phyllitidis, Ceratopteris richardii
    BibTeX

    @article{kazmierczak2007sex,
    	title = "Sex determination in homosporous ferns",
    	author = "Kazmierczak , A.",
    	journal = "Postepy Biologii Komorki",
    	year = 2007,
    	pages = "103--122",
    	volume = 34,
    	abstract = "Polish; Anemia phyllitidis, Ceratopteris richardii"
    }
    
  100. P B Khare and S Kaur. Leaf characteristics in colchicine treated juvenile sporophytes of Ceratopteris thalictroides (L.) Brongn. induction of polyploidy. Science Culture 48:140-141l, 1982.
    BibTeX

    @article{khare1982,
    	title = "Leaf characteristics in colchicine treated juvenile sporophytes of Ceratopteris thalictroides (L.) Brongn. induction of polyploidy",
    	author = "Khare , P.B. and Kaur , S.",
    	journal = "Science Culture",
    	year = 1982,
    	pages = "140-141l",
    	volume = 48
    }
    
  101. Klekowski and L G Hickok. Nonhomologous chromosome pairing in the fern Ceratopteris. American Journal of Botany 61:422-432, 1974.
    BibTeX

    @article{klekowski1974,
    	title = "Nonhomologous chromosome pairing in the fern Ceratopteris",
    	author = "Klekowski , and Hickok , L.G.",
    	journal = "American Journal of Botany",
    	year = 1974,
    	pages = "422-432",
    	volume = 61
    }
    
  102. Jr. Klekowski E.J.. Reproductive biology of the Pteridophyta. IV. An experimental study of mating systems in Ceratopteris thalictroides (L.) Brongn.. Botanical Journal of the Linnean Society 63:153-169, 1970.
    BibTeX

    @article{klekowski1970,
    	title = "Reproductive biology of the Pteridophyta. IV. An experimental study of mating systems in Ceratopteris thalictroides (L.) Brongn.",
    	author = "Klekowski E.J. , Jr.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 1970,
    	pages = "153-169",
    	volume = 63
    }
    
  103. Jr. Klekowski E.J.. Reproductive biology of the Pteridophyta. III. A study of the Blechnaceae. Botanical Journal of the Linnean Society 62:361-377, 1969.
    BibTeX

    @article{klekowski1969,
    	title = "Reproductive biology of the Pteridophyta. III. A study of the Blechnaceae",
    	author = "Klekowski E.J. , Jr.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 1969,
    	pages = "361-377",
    	volume = 62
    }
    
  104. L Kny. Die Entwickelung der Parkeriaceen dargestellt an Ceratopteris thalictroides Brongn.. Nr. 4, 1875.
    BibTeX

    @article{kny1875,
    	title = "Die Entwickelung der Parkeriaceen dargestellt an Ceratopteris thalictroides Brongn.",
    	author = "Kny , L.",
    	year = 1875,
    	volume = "Nr. 4",
    	address = "Dresden",
    	booktitle = "Nova Acta der Ksl. Leop.-Carol. Deutschen Akademie der Naturforscher",
    	edition = "Band XXXVII",
    	publisher = "Druck von E. Blochmann \& Son"
    }
    
  105. V B Amoroso (ed.). Gametophyte development of in vitro cultured Ceratopteris thalictroides (Linn) Brongn. (Parkeriaceae). Central Mindanao University, Musuan, Bukidnon, Philippines, 2007.
    BibTeX

    @book{laraga2007gametophyte,
    	title = "Gametophyte development of in vitro cultured Ceratopteris thalictroides (Linn) Brongn. (Parkeriaceae)",
    	author = "Laraga , S. H.",
    	editor = "V.B. Amoroso",
    	publisher = "Central Mindanao University, Musuan, Bukidnon, Philippines",
    	year = 2007,
    	booktitle = "Fourth Symposium on Asian Pteridology and Garden Show. Abstracts"
    }
    
  106. D E Lemke. New collection records for the aquatic macrophytes Ceratopteris thalictroides (Parkeriaceae) and Limnophila sessiliflora (Scrophulariaceae) in Texas. SIDA Contributions to Botany 16:379-381, 1994.
    BibTeX

    @article{lemke1994,
    	title = "New collection records for the aquatic macrophytes Ceratopteris thalictroides (Parkeriaceae) and Limnophila sessiliflora (Scrophulariaceae) in Texas",
    	author = "Lemke , D.E.",
    	journal = "SIDA Contributions to Botany",
    	year = 1994,
    	pages = "379-381",
    	volume = 16
    }
    
  107. R M Lloyd. Systematics of the genus Ceratopteris Brongn. (Parkeriaceae) II. Taxonomy. Brittonia 26:139-160, 1974.
    BibTeX

    @article{lloyd1974,
    	title = "Systematics of the genus Ceratopteris Brongn. (Parkeriaceae) II. Taxonomy",
    	author = "Lloyd , R.M.",
    	journal = "Brittonia",
    	year = 1974,
    	pages = "139-160",
    	volume = 26
    }
    
  108. R M Lloyd. Systematics of the genus Ceratopteris (Parkeriaceae), I. Sexual and vegetative reproduction in Hawaiian Ceratopteris thalictroides. American Fern Journal 63:12-18, 1973.
    BibTeX

    @article{lloyd1973,
    	title = "Systematics of the genus Ceratopteris (Parkeriaceae), I. Sexual and vegetative reproduction in Hawaiian Ceratopteris thalictroides",
    	author = "Lloyd , R.M.",
    	journal = "American Fern Journal",
    	year = 1973,
    	pages = "12-18",
    	volume = 63
    }
    
  109. R M Lloyd and T R Warne. The absence of genetic load in a morphologically variable sexual species, Ceratopteris thalictroides (Parkeriaceae). Systematic Botany 3:20-36, 1978.
    BibTeX

    @article{lloyd1978,
    	title = "The absence of genetic load in a morphologically variable sexual species, Ceratopteris thalictroides (Parkeriaceae)",
    	author = "Lloyd , R.M. and Warne , T.R.",
    	journal = "Systematic Botany",
    	year = 1978,
    	pages = "20-36",
    	volume = 3
    }
    
  110. R Lopez-Smith and K Renzaglia. Sperm cell architecture, insemination, and fertilization in the model fern, Ceratopteris richardii. Sexual Plant Reproduction 21(63):153-167, 2008.
    Abstract Motile sperm cells of land plants are released directly into the environment and encounter numerous constraints on their way to the egg. Sperm cell organization, shape, size, and plasticity are crucial to the processes associated with fertilization. We conducted an ultrastructural investigation to detail insemination (sperm release, swimming and movement within the archegonium) and fertilization in the model fern Ceratopteris richardii. Gametophytes were grown from spores using sterile culture techniques and flooded in water when sexually mature. Materials were examined at different stages post-flooding. During insemination in C. richardii, the sperm cytoskeleton and flagella rearrange, and the coils of the cell extend while entering the neck canal. In this nearly linear configuration, the dense ridge, a densely compacted band of filaments presumed to be actin, expands to surround the leading edge of the sperm cell. This ridge fuses with the receptive site on the female gamete and is the sperm component that initiates contact with the egg nuclear envelope. All cellular components, except plastids, enter the egg cytoplasm. Sperm mitochondria are distinguishable from those of the egg because they are encased by two or three additional membranes and are sequestered from the zygote cytoplasm. During karyogamy, the sperm components, including the microtubule cytoskeleton (spline) and flagella, maintain their spatial integrity. Microtubules play key roles not only in sperm cell structure but also in facilitating karyogamy in this fern. After karyogamy is completed, microtubule arrays of the sperm cell and the components of the locomotory apparatus are disassembled. We provide the first demonstration of the likely involvement of sperm actin in egg penetration in land plants and new insights into the fate of paternal organelles. This study points to the roles sperm cell structure and dynamics play in the intricate processes of insemination and fertilization in land plants.
    BibTeX

    @article{lopez-b-2008,
    	title = "Sperm cell architecture, insemination, and fertilization in the model fern, Ceratopteris richardii",
    	author = "Lopez-Smith , R. and Renzaglia , K.",
    	journal = "Sexual Plant Reproduction",
    	year = 2008,
    	number = 63,
    	pages = "153-167",
    	volume = 21,
    	abstract = "Motile sperm cells of land plants are released directly into the environment and encounter numerous constraints on their way to the egg. Sperm cell organization, shape, size, and plasticity are crucial to the processes associated with fertilization. We conducted an ultrastructural investigation to detail insemination (sperm release, swimming and movement within the archegonium) and fertilization in the model fern Ceratopteris richardii. Gametophytes were grown from spores using sterile culture techniques and flooded in water when sexually mature. Materials were examined at different stages post-flooding. During insemination in C. richardii, the sperm cytoskeleton and flagella rearrange, and the coils of the cell extend while entering the neck canal. In this nearly linear configuration, the dense ridge, a densely compacted band of filaments presumed to be actin, expands to surround the leading edge of the sperm cell. This ridge fuses with the receptive site on the female gamete and is the sperm component that initiates contact with the egg nuclear envelope. All cellular components, except plastids, enter the egg cytoplasm. Sperm mitochondria are distinguishable from those of the egg because they are encased by two or three additional membranes and are sequestered from the zygote cytoplasm. During karyogamy, the sperm components, including the microtubule cytoskeleton (spline) and flagella, maintain their spatial integrity. Microtubules play key roles not only in sperm cell structure but also in facilitating karyogamy in this fern. After karyogamy is completed, microtubule arrays of the sperm cell and the components of the locomotory apparatus are disassembled. We provide the first demonstration of the likely involvement of sperm actin in egg penetration in land plants and new insights into the fate of paternal organelles. This study points to the roles sperm cell structure and dynamics play in the intricate processes of insemination and fertilization in land plants."
    }
    
  111. D S Loyal and H K Chopra. In vitro life-cycle, regeneration and apospory in Ceratopteris pteridoides (Hook.) Hieron.. Current Science 46:89-91, 1977.
    BibTeX

    @article{loyal1977,
    	title = "In vitro life-cycle, regeneration and apospory in Ceratopteris pteridoides (Hook.) Hieron.",
    	author = "Loyal , D.S. and Chopra , H.K.",
    	journal = "Current Science",
    	year = 1977,
    	pages = "89-91",
    	volume = 46
    }
    
  112. S Lu, Y H Sun, H Amerson and V L Chiang. MicroRNAs in loblolly pine (Pinus taeda L.) and their association with fusiform rust gall development. Plant Journal 51:1077–1098, 2007.
    BibTeX

    @article{lu2007,
    	title = "MicroRNAs in loblolly pine (Pinus taeda L.) and their association with fusiform rust gall development",
    	author = "Lu , S. and Sun , Y. H. and Amerson , H. and Chiang , V. L.",
    	journal = "Plant Journal",
    	year = 2007,
    	pages = "1077--1098",
    	volume = 51
    }
    
  113. V B Amoroso (ed.). Morphological characteristics of Ceratopteris thalictroides complex, a polymorphic aquatic fern. Central Mindanao University, Musuan, Bukidnon, Philippines, 2007.
    BibTeX

    @book{masuyama2007morphological,
    	title = "Morphological characteristics of Ceratopteris thalictroides complex, a polymorphic aquatic fern",
    	author = "Masuyama , S.",
    	editor = "V.B. Amoroso",
    	publisher = "Central Mindanao University, Musuan, Bukidnon, Philippines",
    	year = 2007,
    	booktitle = "Fourth Symposium on Asian Pteridology and Garden Show. Abstracts"
    }
    
  114. S Masuyama. Progenesis as an adaptive strategy in the annual fern Ceratopteris thalictroides in Japan. Plant Species Biology 11(2):225-232, 1996.
    BibTeX

    @article{masuyama1996,
    	title = "Progenesis as an adaptive strategy in the annual fern Ceratopteris thalictroides in Japan",
    	author = "Masuyama , S.",
    	journal = "Plant Species Biology",
    	year = 1996,
    	number = 2,
    	pages = "225-232",
    	volume = 11
    }
    
  115. S Masuyama. Clinal variation of frond morphology and its adaptive implication in the fern Ceratopteris thalictroides in Japan. Plant Species Biology 7:87-96, 1992.
    BibTeX

    @article{masuyama1992,
    	title = "Clinal variation of frond morphology and its adaptive implication in the fern Ceratopteris thalictroides in Japan",
    	author = "Masuyama , S.",
    	journal = "Plant Species Biology",
    	year = 1992,
    	pages = "87-96",
    	volume = 7
    }
    
  116. S Masuyama and Y Watano. Cryptic species in the fern Ceratopteris thalictroides (L.)Brongn. (Parkeriaceae).. Acta Phytotaxonomic Geobotanica 56:231-240, 2005.
    BibTeX

    @article{masuyama2005,
    	title = "Cryptic species in the fern Ceratopteris thalictroides (L.)Brongn. (Parkeriaceae).",
    	author = "Masuyama , S. and Watano , Y.",
    	journal = "Acta Phytotaxonomic Geobotanica",
    	year = 2005,
    	pages = "231-240",
    	volume = 56
    }
    
  117. S Masuyama and Y Watano. Hybrid sterility between two isozymic types of the fern Ceratopteris thalictroides in Japan. Journal of Plant Research 107:269-274, 1994.
    BibTeX

    @article{masuyama1994,
    	title = "Hybrid sterility between two isozymic types of the fern Ceratopteris thalictroides in Japan",
    	author = "Masuyama , S. and Watano , Y.",
    	journal = "Journal of Plant Research",
    	year = 1994,
    	pages = "269-274",
    	volume = 107
    }
    
  118. S Masuyama, Y Yatabe, N Murakami and Y Watano. Cryptic species in the fern Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae). I. Molecular analyses and crossing tests. Journal of Plant Research 115:87-97, 2002.
    BibTeX

    @article{masuyama2002,
    	title = "Cryptic species in the fern Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae). I. Molecular analyses and crossing tests",
    	author = "Masuyama , S. and Yatabe , Y. and Murakami , N. and Watano , Y.",
    	journal = "Journal of Plant Research",
    	year = 2002,
    	pages = "87-97",
    	volume = 115
    }
    
  119. J M McGrath and E Pichersky. Methylation of somatic and sperm DNA in the homosporous fern Ceratopteris richardii. Plant Molecular Biology 35:1023, 1997.
    BibTeX

    @article{mcgrath1997,
    	title = "Methylation of somatic and sperm DNA in the homosporous fern Ceratopteris richardii",
    	author = "McGrath , J.M. and Pichersky , E.",
    	journal = "Plant Molecular Biology",
    	year = 1997,
    	pages = 1023,
    	volume = 35
    }
    
  120. J M McGrath, L G Hickok and E Pichersky. Assessment of gene copy number in the homosporous fern Ceratopteris thalictroides and C. richardii (Parkeriaceae) by restriction fragment length polymorphisms. Plant Systematics and Evolution 189:203-210, 1994.
    BibTeX

    @article{mcgrath1994a,
    	title = "Assessment of gene copy number in the homosporous fern Ceratopteris thalictroides and C. richardii (Parkeriaceae) by restriction fragment length polymorphisms",
    	author = "McGrath , J. M. and Hickok , L.G. and Pichersky , E.",
    	journal = "Plant Systematics and Evolution",
    	year = 1994,
    	pages = "203-210",
    	volume = 189
    }
    
  121. J M McGrath, L G Hickok and E Pichersky. Restriction fragments length polymorphisms distinguish among accessions of Ceratopteris thalictroides and C. richardii (Parkeriaceae). Plant Systematics and Evolution 189:193-202, 1994.
    BibTeX

    @article{mcgrath1994b,
    	title = "Restriction fragments length polymorphisms distinguish among accessions of Ceratopteris thalictroides and C. richardii (Parkeriaceae)",
    	author = "McGrath , J. M. and Hickok , L.G. and Pichersky , E.",
    	journal = "Plant Systematics and Evolution",
    	year = 1994,
    	pages = "193-202",
    	volume = 189
    }
    
  122. H Meekes. Inhibition and recovery of cell wall formation in root hairs of Ceratopteris thalictroides. Journal of Experimental Botany 37:1201-1210, 1986.
    BibTeX

    @article{meekes1986,
    	title = "Inhibition and recovery of cell wall formation in root hairs of Ceratopteris thalictroides",
    	author = "Meekes , H.",
    	journal = "Journal of Experimental Botany",
    	year = 1986,
    	pages = "1201-1210",
    	volume = 37
    }
    
  123. C Melear, J D Goodlaxson, T R Warne and L G Hickok. Teaching preservice science teachers how to do science: Responses to the research experience. Journal of Science Teacher Education 11:1-14, 2000.
    BibTeX

    @article{melear2000,
    	title = "Teaching preservice science teachers how to do science: Responses to the research experience",
    	author = "Melear , C. and Goodlaxson , J.D. and Warne , T.R. and Hickok , L.G.",
    	journal = "Journal of Science Teacher Education",
    	year = 2000,
    	pages = "1-14",
    	volume = 11
    }
    
  124. P I R. E. Yager (ed.). Responses of preservice secondary teachers to learning science in an apprenticeship: the research experience. pages 26-35, 1998.
    BibTeX

    @inbook{melear1998,
    	title = "Responses of preservice secondary teachers to learning science in an apprenticeship: the research experience",
    	author = "Melear , C. and Hickok , L.G. and Goodlaxson , J.D. and Warne , T.R.",
    	editor = "R. E. Yager, P.I.",
    	pages = "26-35",
    	year = 1998,
    	booktitle = "Translating and Using Research for Improving Teacher Education in Science and Mathematics, Final report of ISTEP Research Project"
    }
    
  125. T Munster, J Pahnke, A Di Rosa, J T Kim, W Martin, H Saedler and G Theissen. Floral homeotic genes were recruited from homologous MADS-box genes preexisting in the common ancestor of ferns and seed plants. Proceeding of the National Academy of Sciences USA 94:2415-2420, 1997.
    BibTeX

    @article{munster1997,
    	title = "Floral homeotic genes were recruited from homologous MADS-box genes preexisting in the common ancestor of ferns and seed plants",
    	author = "Munster , T. and Pahnke , J. and Di Rosa , A. and Kim , J.T. and Martin , W. and Saedler , H. and Theissen , G.",
    	journal = "Proceeding of the National Academy of Sciences USA",
    	year = 1997,
    	pages = "2415-2420",
    	volume = 94
    }
    
  126. T Murata, A Kadota and M Wada. Effects of blue light on cell elongation and microtuble orientation in dark-grown gametophytes of Ceratopteris richardii. Plant and Cell Physiology 38:201, 1997.
    BibTeX

    @article{murata1997,
    	title = "Effects of blue light on cell elongation and microtuble orientation in dark-grown gametophytes of Ceratopteris richardii",
    	author = "Murata , T. and Kadota , A. and Wada , M.",
    	journal = "Plant and Cell Physiology",
    	year = 1997,
    	pages = 201,
    	volume = 38
    }
    
  127. T Murata and M Sugai. Photoregulation of asymetric cell division followed by rhizoid development in the fern Ceratopteris prothalli. Plant and Cell Physiology 41(12):1313-1320, 2000.
    BibTeX

    @article{murata2000,
    	title = "Photoregulation of asymetric cell division followed by rhizoid development in the fern Ceratopteris prothalli",
    	author = "Murata , T. and Sugai , M.",
    	journal = "Plant and Cell Physiology",
    	year = 2000,
    	number = 12,
    	pages = "1313-1320",
    	volume = 41
    }
    
  128. T Nakazato, M K Jung, E A Housworth, L H Rieseberg and G J Gastony. Genetic mapbased analysis of genome structure in the homosporous fern Ceratopteris richardii.. Genetics 173:1585-1597, 2006.
    BibTeX

    @article{nakazato2006,
    	title = "Genetic mapbased analysis of genome structure in the homosporous fern Ceratopteris richardii.",
    	author = "Nakazato , T. and Jung , M.K. and Housworth , E.A. and Rieseberg , L.H. and Gastony , G.J.",
    	journal = "Genetics",
    	year = 2006,
    	pages = "1585-1597",
    	volume = 173
    }
    
  129. T Nakazato, M-K Jung, E A Housworth and L H Rieseberg. A genomewide study of reproductive barriers between allopatric populations of a homosporous fern, Ceratopteris richardii. Genetics 177:1141-1150, 2007.
    Abstract Biological factors involved in reproductive barriers between two divergent races of Ceratopteris richardii were investigated. We used a combination of spore germination rates, QTL analysis of spore germination rates, and transmission ratio distortion (TRD) of 729 RFLPs, AFLPs, and isozyme markers distributed across the genome on the basis of hybrid populations of 488 doubled haploid lines (DHLs) and 168 F2ś. Substantial reproductive barriers were found between the parental races, predominantly in the form of spore inviability (23.7% F1 spore viability). Intrinsic genetic factors such as Bateson–Dobzhansky–Muller (BDM) incompatibilities involving both nuclear–nuclear and nuclear–cytoplasmic factors and chromosomal rearrangements appear to contribute to intrinsic postzygotic isolation. The genomewide distribution patterns of TRD loci support the hypothesis that reproductive barriers are a byproduct of divergence in allopatry and that the strong reproductive barriers are attributable to a small number of genetic elements scattered throughout the genome.
    BibTeX

    @article{nakazato2007,
    	title = "A genomewide study of reproductive barriers between allopatric populations of a homosporous fern, Ceratopteris richardii",
    	author = "Nakazato , T. and Jung , M-K. and Housworth , E.A. and Rieseberg , L.H.",
    	journal = "Genetics",
    	year = 2007,
    	pages = "1141-1150",
    	volume = 177,
    	abstract = "Biological factors involved in reproductive barriers between two divergent races of Ceratopteris richardii were investigated. We used a combination of spore germination rates, QTL analysis of spore germination rates, and transmission ratio distortion (TRD) of 729 RFLPs, AFLPs, and isozyme markers distributed across the genome on the basis of hybrid populations of 488 doubled haploid lines (DHLs) and 168 F2\'s. Substantial reproductive barriers were found between the parental races, predominantly in the form of spore inviability (23.7% F1 spore viability). Intrinsic genetic factors such as Bateson–Dobzhansky–Muller (BDM) incompatibilities involving both nuclear–nuclear and nuclear–cytoplasmic factors and chromosomal rearrangements appear to contribute to intrinsic postzygotic isolation. The genomewide distribution patterns of TRD loci support the hypothesis that reproductive barriers are a byproduct of divergence in allopatry and that the strong reproductive barriers are attributable to a small number of genetic elements scattered throughout the genome.",
    	eprint = "http://www.c-fern.org/docs/Nakazato_et_al_Genetics_2007.pdf"
    }
    
  130. B K A Nayar. Comparative study of the spore morphology of Ceratopteris, Anemia and Mohria, and its bearing on the relationships of the Parkeriaceae. Indian Botanical Society Journal 47:246-256, 1968.
    BibTeX

    @article{nayar1968,
    	title = "Comparative study of the spore morphology of Ceratopteris, Anemia and Mohria, and its bearing on the relationships of the Parkeriaceae",
    	author = "Nayar , B.K.A.",
    	journal = "Indian Botanical Society Journal",
    	year = 1968,
    	pages = "246-256",
    	volume = 47
    }
    
  131. O Oberschmidt, C Hucking and B Piechulla. Diurnal Lhc gene expression is present in many but not all species of the plant kingdom. Plant Molecular Biology 27:147-153, 1995.
    BibTeX

    @article{oberschmidt1995,
    	title = "Diurnal Lhc gene expression is present in many but not all species of the plant kingdom",
    	author = "Oberschmidt , O. and Hucking , C. and Piechulla , B.",
    	journal = "Plant Molecular Biology",
    	year = 1995,
    	pages = "147-153",
    	volume = 27
    }
    
  132. O A Oke. Determination of the survival rate of Neochetina eichhorniae Warner (Coleoptera: Curculionidae) on aquatic and terrestrial plants in south-western Nigeria. Advances in Plant Sciences 20:119–120, 2007.
    Abstract Azolla, Ceratopteris
    BibTeX

    @article{oke2007determination,
    	title = "Determination of the survival rate of Neochetina eichhorniae Warner (Coleoptera: Curculionidae) on aquatic and terrestrial plants in south-western Nigeria",
    	author = "Oke , O. A.",
    	journal = "Advances in Plant Sciences",
    	year = 2007,
    	pages = "119--120",
    	volume = 20,
    	abstract = "Azolla, Ceratopteris"
    }
    
  133. N Pal and S Pal. Studies in the morphology and affinity of the Parkeriaceae. III. A discussion of the systematic position of the family and specific delimitation in the genus Ceratopteris. Bulletin of the Botanical Society of Bengal 23:17-26, 1969.
    BibTeX

    @article{pal1969,
    	title = "Studies in the morphology and affinity of the Parkeriaceae. III. A discussion of the systematic position of the family and specific delimitation in the genus Ceratopteris",
    	author = "Pal , N. and Pal , S.",
    	journal = "Bulletin of the Botanical Society of Bengal",
    	year = 1969,
    	pages = "17-26",
    	volume = 23
    }
    
  134. N Pal and S Pal. Studies on morphology and affinity of the Parkeriaceae. II. Sporogenesis, development of the gametophyte, and cytology of Ceratopteris thalictroides. Botanical Gazette 125:405-412, 1963.
    BibTeX

    @article{pal1963,
    	title = "Studies on morphology and affinity of the Parkeriaceae. II. Sporogenesis, development of the gametophyte, and cytology of Ceratopteris thalictroides",
    	author = "Pal , N. and Pal , S.",
    	journal = "Botanical Gazette",
    	year = 1963,
    	pages = "405-412",
    	volume = 125
    }
    
  135. N Pal and S Pal. Studies on morphology and affinity of the Parkeriaceae I. Morphological observations of Ceratopteris thalictroides. Botanical Gazette 123:132-143, 1962.
    BibTeX

    @article{pal1962,
    	title = "Studies on morphology and affinity of the Parkeriaceae I. Morphological observations of Ceratopteris thalictroides",
    	author = "Pal , N. and Pal , S.",
    	journal = "Botanical Gazette",
    	year = 1962,
    	pages = "132-143",
    	volume = 123
    }
    
  136. A J Petrik-Ott and F D Ott. Two new sites for Ceratopteris thalictroides in Texas [Pteridophyta]. American Fern Journal 66:11, 1976.
    BibTeX

    @article{petrikott1976,
    	title = "Two new sites for Ceratopteris thalictroides in Texas [Pteridophyta]",
    	author = "Petrik-Ott , A.J. and Ott , F.D.",
    	journal = "American Fern Journal",
    	year = 1976,
    	pages = 11,
    	volume = 66
    }
    
  137. V S Polito. DNA microspectrophotometry of shoot apical meristem cell populations in Ceratopteris thalictroides (Filicales) [Pteridophyta]. American Journal of Botany 67:274-277, 1980.
    BibTeX

    @article{polito1980,
    	title = "DNA microspectrophotometry of shoot apical meristem cell populations in Ceratopteris thalictroides (Filicales) [Pteridophyta]",
    	author = "Polito , V.S.",
    	journal = "American Journal of Botany",
    	year = 1980,
    	pages = "274-277",
    	volume = 67
    }
    
  138. V S Polito. Cell division kinetics in the shoot apical meristem of Ceratopteris thalictroides Brong Pteridophyta with special reference to the apical cell. American Journal of Botany 66:485-493, 1979.
    BibTeX

    @article{polito1979,
    	title = "Cell division kinetics in the shoot apical meristem of Ceratopteris thalictroides Brong Pteridophyta with special reference to the apical cell",
    	author = "Polito , V.S.",
    	journal = "American Journal of Botany",
    	year = 1979,
    	pages = "485-493",
    	volume = 66
    }
    
  139. V S Raju. Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae) from the Godavari region of Andhra Pradesh [India]. Journal of Economic and Taxonomic Botany 4:316, 1983.
    BibTeX

    @article{raju1983,
    	title = "Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae) from the Godavari region of Andhra Pradesh [India]",
    	author = "Raju , V.S.",
    	journal = "Journal of Economic and Taxonomic Botany",
    	year = 1983,
    	pages = 316,
    	volume = 4
    }
    
  140. A Rashid. Effect of iron chelates on sporophyll formation of Ceratopteris thalictroides. Zietschrift Pflanzenphysiologie 86:203-205, 1978.
    BibTeX

    @article{rashid1978,
    	title = "Effect of iron chelates on sporophyll formation of Ceratopteris thalictroides",
    	author = "Rashid , A.",
    	journal = "Zietschrift Pflanzenphysiologie",
    	year = 1978,
    	pages = "203-205",
    	volume = 86
    }
    
  141. B Rathinasabapathi. Ferns represent an untapped biodiversity for improving crops for environmental stress tolerance.. New Phytologist 172:385-390, 2006.
    BibTeX

    @article{rathinasabapathi2006,
    	title = "Ferns represent an untapped biodiversity for improving crops for environmental stress tolerance.",
    	author = "Rathinasabapathi , B.",
    	journal = "New Phytologist",
    	year = 2006,
    	pages = "385-390",
    	volume = 172
    }
    
  142. K S Renzaglia and T R Warne. Ceratopteris: An ideal model system for teaching plant biology. International Journal of Plant Science 156:385-392, 1995.
    BibTeX

    @article{renzaglia1995a,
    	title = "Ceratopteris: An ideal model system for teaching plant biology",
    	author = "Renzaglia , K.S. and Warne , T.R.",
    	journal = "International Journal of Plant Science",
    	year = 1995,
    	pages = "385-392",
    	volume = 156
    }
    
  143. K S Renzaglia, K D Wood, G Rupp and L G Hickok. Characterization of the sleepy sperm mutant in the fern Ceratopteris richardii: A new model for the study of axonemal function. Canadian Journal of Botany 82:1602-1617, 2004.
    BibTeX

    @article{renzaglia2004,
    	title = "Characterization of the sleepy sperm mutant in the fern Ceratopteris richardii: A new model for the study of axonemal function",
    	author = "Renzaglia , K.S. and Wood , K.D. and Rupp , G. and Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 2004,
    	pages = "1602-1617",
    	volume = 82
    }
    
  144. K S Renzaglia, T R Warne and L G Hickok. Plant development and the fern life cycle using Ceratopteris richardii. American Biology Teacher 57:438-442, 1995.
    BibTeX

    @article{renzaglia1995b,
    	title = "Plant development and the fern life cycle using Ceratopteris richardii",
    	author = "Renzaglia , K. S. and Warne , T.R. and Hickok , L.G.",
    	journal = "American Biology Teacher",
    	year = 1995,
    	pages = "438-442",
    	volume = 57
    }
    
  145. G J Retallack and M X Kirby. Middle miocene global change and paleogeography of Panama.. Palaios 22:667–679, 2007.
    Abstract Acrostichum, Ceratopteris, Cyathea, Pteris, Selaginella
    BibTeX

    @article{retallack2007,
    	title = "Middle miocene global change and paleogeography of Panama.",
    	author = "Retallack , G. J. and Kirby , M. X.",
    	journal = "Palaios",
    	year = 2007,
    	pages = "667--679",
    	volume = 22,
    	abstract = "Acrostichum, Ceratopteris, Cyathea, Pteris, Selaginella"
    }
    
  146. L V G Ros, C Gabaldon, F Pomar, F Merino, M A Pedreno and A R Barcelo. Structural motifs of syringyl peroxidases predate not only the gymnosperm-angiosperm divergence but also the radiation of tracheophytes. New Phytologist 173:63–78, 2007.
    BibTeX

    @article{ros2007,
    	title = "Structural motifs of syringyl peroxidases predate not only the gymnosperm-angiosperm divergence but also the radiation of tracheophytes",
    	author = "Ros , L. V. G. and Gabaldon , C. and Pomar , F. and Merino , F. and Pedreno , M. A. and Barcelo , A. R.",
    	journal = "New Phytologist",
    	year = 2007,
    	pages = "63--78",
    	volume = 173
    }
    
  147. G Rutherford, M Tanurdzic, M Hasebe and J A Banks. A systemic gene silencing method suitable for high throughput, reverse genetic analyses of gene function in fern gametophytes. BMC Plant Biology online journal, see http://www.biomedcentral.com 16:6, 2004.
    BibTeX

    @article{rutherford2004,
    	title = "A systemic gene silencing method suitable for high throughput, reverse genetic analyses of gene function in fern gametophytes",
    	author = "Rutherford , G. and Tanurdzic , M. and Hasebe , M. and Banks , J.A.",
    	journal = "BMC Plant Biology online journal, see http://www.biomedcentral.com",
    	year = 2004,
    	pages = 6,
    	volume = 16
    }
    
  148. M L Salmi, K E Morris, S J Roux and D M Porterfield. Nitric oxide and cGMP signaling in calcium-dependent development of cell polarity in Ceratopteris richardii. Plant Physiology (Rockville) 144:94–104, 2007.
    BibTeX

    @article{salmi2007,
    	title = "Nitric oxide and cGMP signaling in calcium-dependent development of cell polarity in Ceratopteris richardii",
    	author = "Salmi , M. L. and Morris , K. E. and Roux , S. J. and Porterfield , D. M.",
    	journal = "Plant Physiology (Rockville)",
    	year = 2007,
    	pages = "94--104",
    	volume = 144
    }
    
  149. A Sayers and R G Hamilton. The effect of neighbors on gametophyte development in Ceratopteris richardii. American Fern Journal 85:47-53, 1995.
    BibTeX

    @article{sayers1995,
    	title = "The effect of neighbors on gametophyte development in Ceratopteris richardii",
    	author = "Sayers , A. and Hamilton , R.G.",
    	journal = "American Fern Journal",
    	year = 1995,
    	pages = "47-53",
    	volume = 85
    }
    
  150. M D Schedlbauer. Fern gametophyte development: Controls of dimorphism in Ceratopteris thalictroides. American Journal of Botany 63:1080-1087, 1976.
    Abstract Multispore cultures of Ceratopteris thalictroides (L.) Brongn. gametophytes contain plants of two distinct morphologies, hermaphrodite and male (Fig. 3). The male gametophyte has previously been shown to be induced by an antheridogen system. In the absence of the antheridogen all gametophytes become hermaphroditic. It is shown that the hermaphroditic gametophytes are first to develop in multispore cultures and are also the only source of antheridogen. Thus, since males are only produced in the presence of antheridogen, an explanation of the occurrence of two morphologies is evident. That is, the first gametophytes to develop do so in the absence of antheridogen, become hermaphrodites and produce antheridogen to which later developing gametophytes respond by becoming males. This does not explain why there is a range in development times for the gametophytes. Three possible controlling factors of development are investigated in multispore cultures: spore size, time of germination, and gametophyte growth. Data collected on these three factors are statistically analyzed. Analyses were done to determine the relative importance (singly or in combination) of these factors in predicting the developmental potential of a gametophyte. It was found that spore size most accurately indicated (ca 75% of the time) future gametophyte development.
    BibTeX

    @article{schedlbauer1976a,
    	title = "Fern gametophyte development: Controls of dimorphism in Ceratopteris thalictroides",
    	author = "Schedlbauer , M.D.",
    	journal = "American Journal of Botany",
    	year = 1976,
    	pages = "1080-1087",
    	volume = 63,
    	abstract = "Multispore cultures of Ceratopteris thalictroides (L.) Brongn. gametophytes contain plants of two distinct morphologies, hermaphrodite and male (Fig. 3). The male gametophyte has previously been shown to be induced by an antheridogen system. In the absence of the antheridogen all gametophytes become hermaphroditic. It is shown that the hermaphroditic gametophytes are first to develop in multispore cultures and are also the only source of antheridogen. Thus, since males are only produced in the presence of antheridogen, an explanation of the occurrence of two morphologies is evident. That is, the first gametophytes to develop do so in the absence of antheridogen, become hermaphrodites and produce antheridogen to which later developing gametophytes respond by becoming males. This does not explain why there is a range in development times for the gametophytes. Three possible controlling factors of development are investigated in multispore cultures: spore size, time of germination, and gametophyte growth. Data collected on these three factors are statistically analyzed. Analyses were done to determine the relative importance (singly or in combination) of these factors in predicting the developmental potential of a gametophyte. It was found that spore size most accurately indicated (ca 75% of the time) future gametophyte development."
    }
    
  151. M D Schedlbauer. Specificity of the antheridogen from Ceratopteris thalictroides (L.) Brongn.. Plant Physiology 57:666-669, 1976.
    Abstract Characteristics of the fern antheridogen from Ceratopteris thalictroides (L.) Brongn. are investigated. These are: (a) determination of molecular size (it is readily dialyzable), (b) pKa (about 5), (c) movement in thin layer chromatography, and (d) ability to induce dark germination of fern spores. These four characteristics are compared to the same characteristics of three other antheridogens (antheridogens A and B or GA). Molecular size and pKa are similar, but, the antheridogens are separable from each other using thin layer chromatography. It was also shown that spore germination is not induced by the Ceratopteris antheridogen, even in its own spores, a characteristic not reported as shared by the other antheridogens. However, the inconsistency of spore germination as an assay for antheridogen is demonstrated. The presence of gametophyte-produced allelopathic substances is also shown.
    BibTeX

    @article{schedlbauer1976b,
    	title = "Specificity of the antheridogen from Ceratopteris thalictroides (L.) Brongn.",
    	author = "Schedlbauer , M.D.",
    	journal = "Plant Physiology",
    	year = 1976,
    	pages = "666-669",
    	volume = 57,
    	abstract = "Characteristics of the fern antheridogen from Ceratopteris thalictroides (L.) Brongn. are investigated. These are: (a) determination of molecular size (it is readily dialyzable), (b) pKa (about 5), (c) movement in thin layer chromatography, and (d) ability to induce dark germination of fern spores. These four characteristics are compared to the same characteristics of three other antheridogens (antheridogens A and B or GA). Molecular size and pKa are similar, but, the antheridogens are separable from each other using thin layer chromatography. It was also shown that spore germination is not induced by the Ceratopteris antheridogen, even in its own spores, a characteristic not reported as shared by the other antheridogens. However, the inconsistency of spore germination as an assay for antheridogen is demonstrated. The presence of gametophyte-produced allelopathic substances is also shown."
    }
    
  152. M D Schedlbauer. Biological specificity of the antheridogen from Ceratopteris thalictroides (L.) Brongn.. Planta 116:39-43, 1974.
    BibTeX

    @article{schedlbauer1974,
    	title = "Biological specificity of the antheridogen from Ceratopteris thalictroides (L.) Brongn.",
    	author = "Schedlbauer , M.D.",
    	journal = "Planta",
    	year = 1974,
    	pages = "39-43",
    	volume = 116
    }
    
  153. M D Schedlbauer, C F Cave and P R Bell. The incorporation of DL-[3-14C]cysteine during spermatogenesis in Ceratopteris thalictroides. Journal of Cell Science 12:765-779, 1973.
    Abstract Radioactive cysteine fed for 6 h to young gametophytes of Ceratopteris actively producing antheridia was incorporated readily into the early stages of spermatogenesis, but hardly at all into differentiating spermatocytes. Spermatocytes contained only little radioactivity even when the gametophytes were grown for a further 18 h before fixation, thus ensuring that the radioactive label was available at or near the time of their formation. There was some evidence that in very young spermatocytes in the latter material the incorporation was more marked at the periphery of the blepharoplast than elsewhere. The results are interpreted as indicating that the differentiation of the spermatocyte involves little if any net protein synthesis. The proteins of the new structures peculiar to the gamete may thus have been synthesized in earlier stages of spermatogenesis, the last phase of visual differentiation being a consequence of their assembly and organization.
    BibTeX

    @article{schedlbauer1973,
    	title = "The incorporation of DL-[3-14C]cysteine during spermatogenesis in Ceratopteris thalictroides",
    	author = "Schedlbauer , M.D. and Cave , C.F. and Bell , P.R.",
    	journal = "Journal of Cell Science",
    	year = 1973,
    	pages = "765-779",
    	volume = 12,
    	abstract = "Radioactive cysteine fed for 6 h to young gametophytes of Ceratopteris actively producing antheridia was incorporated readily into the early stages of spermatogenesis, but hardly at all into differentiating spermatocytes. Spermatocytes contained only little radioactivity even when the gametophytes were grown for a further 18 h before fixation, thus ensuring that the radioactive label was available at or near the time of their formation. There was some evidence that in very young spermatocytes in the latter material the incorporation was more marked at the periphery of the blepharoplast than elsewhere. The results are interpreted as indicating that the differentiation of the spermatocyte involves little if any net protein synthesis. The proteins of the new structures peculiar to the gamete may thus have been synthesized in earlier stages of spermatogenesis, the last phase of visual differentiation being a consequence of their assembly and organization."
    }
    
  154. M D Schedlbauer and E J Klekowski. Antheridogen activity in the fern Ceratopteris thalictroides (L.) Brongn.. Botanical Journal of the Linnean Society 65:399-413, 1972.
    BibTeX

    @article{schedlbauer1972,
    	title = "Antheridogen activity in the fern Ceratopteris thalictroides (L.) Brongn.",
    	author = "Schedlbauer , M.D. and Klekowski , E.J.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 1972,
    	pages = "399-413",
    	volume = 65
    }
    
  155. E E Schilling. Lack of variability in Ceratopteris flavonoids. Phytochemical Bulletin 18:1-4, 1987.
    BibTeX

    @article{schilling1987,
    	title = "Lack of variability in Ceratopteris flavonoids",
    	author = "Schilling , E.E.",
    	journal = "Phytochemical Bulletin",
    	year = 1987,
    	pages = "1-4",
    	volume = 18
    }
    
  156. R J Scott, G J Gastony, J W Weatherford and T Nakazato. Characterization of four members of the alpha-tubulin gene family in Ceratopteris richardii. American Fern Journal 97(2):47-65, 2007.
    Abstract Four members of the alpha-tubulin gene family were examined in Ceratopteris richardii. Genetic linkage mapping based on a population of nearly 500 Doubled Haploid Lines was able to position three or four members of this gene family on linkage groups 17, 24, and 28, respectively (two of the four observed polymorphic restriction fragments containing alpha-tubulin genes are either identical or map too close to each other on linkage group 17 to be distinguishable in map distance). Non-mapable monomorphic bands observed on probed Southern blots suggest that the alpha-tubulin gene family in this species is large. Four alpha-tubulin genes from C. richardii were sequenced and found to be fairly similar to each other in terms of their amino acid sequences, with their greatest diversity at the carboxy-terminal ends. BLAST comparisons found each of these four amino acid sequences more similar to an alpha-tubulin from a dicot,gymnosperm, or alga species than it was to any other alpha-tubulin sequence presently known from Ceratopteris or from the fern Anemia phyllitidis or the moss Physcomitrella patens. Bayesian phylogenetic analysis of nucleotide sequences placed three of the four Ceratopteris alpha-tubulin gene copies in a clade with copies from Pseudotsuga and Anemia, consistent with a history of two gene duplication events, one following and one preceding the divergence of ferns and seed plants. The fourth copy is robustly separated from the preceding three and placed in a clade of algal alphatubulin genes, suggesting its divergence from the ancestor of the other three before the divergence of algae and land plants. As characterized thus far, the alpha-tubulin gene family of C. richardii is relatively large as compared to the six copies known from fully sequenced Arabidopsis thaliana, a condition that may be correlated with the large genome size and diverse life history constraints of this homosporous fern species. These findings suggest several new opportunities for research into the evolution, function, and regulation of the alpha-tubulin gene family in Ceratopteris.
    URL BibTeX

    @article{scott2007,
    	title = "Characterization of four members of the alpha-tubulin gene family in Ceratopteris richardii",
    	author = "Scott , R.J. and Gastony , G.J. and Weatherford , J.W. and Nakazato , T",
    	journal = "American Fern Journal",
    	year = 2007,
    	number = 2,
    	pages = "47-65",
    	volume = 97,
    	abstract = "Four members of the alpha-tubulin gene family were examined in Ceratopteris richardii. Genetic linkage mapping based on a population of nearly 500 Doubled Haploid Lines was able to position three or four members of this gene family on linkage groups 17, 24, and 28, respectively (two of the four observed polymorphic restriction fragments containing alpha-tubulin genes are either identical or map too close to each other on linkage group 17 to be distinguishable in map distance). Non-mapable monomorphic bands observed on probed Southern blots suggest that the alpha-tubulin gene family in this species is large. Four alpha-tubulin genes from C. richardii were sequenced and found to be fairly similar to each other in terms of their amino acid sequences, with their greatest diversity at the carboxy-terminal ends. BLAST comparisons found each of these four amino acid sequences more similar to an alpha-tubulin from a dicot,gymnosperm, or alga species than it was to any other alpha-tubulin sequence presently known from Ceratopteris or from the fern Anemia phyllitidis or the moss Physcomitrella patens. Bayesian phylogenetic analysis of nucleotide sequences placed three of the four Ceratopteris alpha-tubulin gene copies in a clade with copies from Pseudotsuga and Anemia, consistent with a history of two gene duplication events, one following and one preceding the divergence of ferns and seed plants. The fourth copy is robustly separated from the preceding three and placed in a clade of algal alphatubulin genes, suggesting its divergence from the ancestor of the other three before the divergence of algae and land plants. As characterized thus far, the alpha-tubulin gene family of C. richardii is relatively large as compared to the six copies known from fully sequenced Arabidopsis thaliana, a condition that may be correlated with the large genome size and diverse life history constraints of this homosporous fern species. These findings suggest several new opportunities for research into the evolution, function, and regulation of the alpha-tubulin gene family in Ceratopteris.",
    	url = "http://www.c-fern.org/docs/Scott_Gastony_Weatherford_Nakazato_2007_AFJ.pdf"
    }
    
  157. R J Scott and L G Hickok. Inheritance and characterization of a dark-germinating, light-inhibited mutant in the fern Ceratopteris richardii. Canadian Journal of Botany 69:2616-2619, 1991.
    BibTeX

    @article{scott1991,
    	title = "Inheritance and characterization of a dark-germinating, light-inhibited mutant in the fern Ceratopteris richardii",
    	author = "Scott , R.J. and Hickok , L.G.",
    	journal = "Canadian Journal of Botany",
    	year = 1991,
    	pages = "2616-2619",
    	volume = 69
    }
    
  158. R J Scott and L G Hickok. Genetic analysis of antheridiogen sensitivity in Ceratopteris richardii. American Journal of Botany 74:1872-1877, 1987.
    BibTeX

    @article{scott1987,
    	title = "Genetic analysis of antheridiogen sensitivity in Ceratopteris richardii",
    	author = "Scott , R.J. and Hickok , L.G.",
    	journal = "American Journal of Botany",
    	year = 1987,
    	pages = "1872-1877",
    	volume = 74
    }
    
  159. T K Simon and S Avita. On the structure and growth behaviour of shoot buds in Ceratopteris thalictroides (L.) Ad. Brongn.. Journal of Plant Anatomy and Morphology 6:87-92, 1993.
    BibTeX

    @article{simon1993,
    	title = "On the structure and growth behaviour of shoot buds in Ceratopteris thalictroides (L.) Ad. Brongn.",
    	author = "Simon , T.K. and Avita , S.",
    	journal = "Journal of Plant Anatomy and Morphology",
    	year = 1993,
    	pages = "87-92",
    	volume = 6
    }
    
  160. J Singh and S Devi. Effect of linear alkyl benzene sulphonate on germination of spores of the aquatic fern Ceratopteris thalictroides. Bulletin of Environmental Contamination and Toxicology 43:111-117, 1989.
    BibTeX

    @article{singh1989,
    	title = "Effect of linear alkyl benzene sulphonate on germination of spores of the aquatic fern Ceratopteris thalictroides",
    	author = "Singh , J. and Devi , S.",
    	journal = "Bulletin of Environmental Contamination and Toxicology",
    	year = 1989,
    	pages = "111-117",
    	volume = 43
    }
    
  161. J Singh, S Devi and M Gupta. Chlorotetracycline induced fluorescence of antherozoids in ferns. Stain Technology 65:125-130, 1990.
    BibTeX

    @article{singh1990,
    	title = "Chlorotetracycline induced fluorescence of antherozoids in ferns",
    	author = "Singh , J. and Devi , S. and Gupta , M.",
    	journal = "Stain Technology",
    	year = 1990,
    	pages = "125-130",
    	volume = 65
    }
    
  162. J Singh, P N Viswanathan, M Gupta and S Devi. Uptake and translocation of Cd109 by two aquatic ferns in relation to relative toxic response. Bulletin of Environmental Contamination and Toxicology 51:914-919, 1993.
    BibTeX

    @article{singh1993,
    	title = "Uptake and translocation of Cd109 by two aquatic ferns in relation to relative toxic response",
    	author = "Singh , J. and Viswanathan , P.N. and Gupta , M. and Devi , S.",
    	journal = "Bulletin of Environmental Contamination and Toxicology",
    	year = 1993,
    	pages = "914-919",
    	volume = 51
    }
    
  163. M R Singh. Characterization of a hydroxyproline tolerant mutant in the fern Ceratopteris. The University of Tennessee, Knoxville, Knoxville, TN, 1990.
    BibTeX

    @mastersthesis{singh-b-1990,
    	title = "Characterization of a hydroxyproline tolerant mutant in the fern Ceratopteris",
    	author = "Singh , M.R.",
    	school = "The University of Tennessee, Knoxville",
    	year = 1990,
    	address = "Knoxville, TN"
    }
    
  164. V Singh. Occurrence of Ceratopteris thalictroides (Linn.) Brongn. in Rajasthan. Bombay Natural History Society Journal 67:354-355, 1970.
    BibTeX

    @article{singh19770,
    	title = "Occurrence of Ceratopteris thalictroides (Linn.) Brongn. in Rajasthan",
    	author = "Singh , V.",
    	journal = "Bombay Natural History Society Journal",
    	year = 1970,
    	pages = "354-355",
    	volume = 67
    }
    
  165. V P Singh and S K Roy. Mating systems and distribution in some tropical ferns [Pteridophyta, Ceratopteris thalictroides, Pseudodrynaria coronans and Pityrogramma calomelanos]. Annals of Botany 41:1055-1060, 1977.
    BibTeX

    @article{singh1977,
    	title = "Mating systems and distribution in some tropical ferns [Pteridophyta, Ceratopteris thalictroides, Pseudodrynaria coronans and Pityrogramma calomelanos]",
    	author = "Singh , V.P. and Roy , S.K.",
    	journal = "Annals of Botany",
    	year = 1977,
    	pages = "1055-1060",
    	volume = 41
    }
    
  166. D B Stein. Gibberellin-induced fertility in the fern Ceratopteris thalictroides (L.) Brongn.. Plant Physiology 48:416-418, 1971.
    BibTeX

    @article{stein1971,
    	title = "Gibberellin-induced fertility in the fern Ceratopteris thalictroides (L.) Brongn.",
    	author = "Stein , D.B.",
    	journal = "Plant Physiology",
    	year = 1971,
    	pages = "416-418",
    	volume = 48
    }
    
  167. S C Stout, G B Clark, S Archer-Evans and Roux S.J.. Rapid and efficient suppression of gene expression in a single-cell model system, Ceratopteris richardii. Plant Physiology 131(3):1165-1168, 2003.
    BibTeX

    @article{stout2003,
    	title = "Rapid and efficient suppression of gene expression in a single-cell model system, Ceratopteris richardii",
    	author = "Stout , S.C. and Clark , G.B. and Archer-Evans , S. and S.J. , Roux",
    	journal = "Plant Physiology",
    	year = 2003,
    	number = 3,
    	pages = "1165-1168",
    	volume = 131
    }
    
  168. E Strain, B Hass and J A Banks. Characterization of mutations that feminize gametophytes of the fern Ceratopteris. Genetics 159(3):1271-1281, 2001.
    BibTeX

    @article{strain2001,
    	title = "Characterization of mutations that feminize gametophytes of the fern Ceratopteris",
    	author = "Strain , E. and Hass , B. and Banks , J.A.",
    	journal = "Genetics",
    	year = 2001,
    	number = 3,
    	pages = "1271-1281",
    	volume = 159
    }
    
  169. J A Traas, P Braat, A M Emons, H Meekes and J Derksen. Microtubules in root hairs. Journal of Cell Science 76:303-320, 1985.
    BibTeX

    @article{traas1985,
    	title = "Microtubules in root hairs",
    	author = "Traas , J.A. and Braat , P. and Emons , A.M. and Meekes , H. and Derksen , J.",
    	journal = "Journal of Cell Science",
    	year = 1985,
    	pages = "303-320",
    	volume = 76
    }
    
  170. R R Urs, P D Roberts and D C Schultz. Localisation of hydrogen peroxide and peroxidase in gametophytes of Ceratopteris richardii (C-fern)grown in the presence of pathogenic fungi in a gnotobiotic system.. Annals of Applied Biology 149:327-336, 2006.
    BibTeX

    @article{urs2006,
    	title = "Localisation of hydrogen peroxide and peroxidase in gametophytes of Ceratopteris richardii (C-fern)grown in the presence of pathogenic fungi in a gnotobiotic system.",
    	author = "Urs , R.R. and Roberts , P.D. and Schultz , D.C.",
    	journal = "Annals of Applied Biology",
    	year = 2006,
    	pages = "327-336",
    	volume = 149
    }
    
  171. J Van Donselaar. On the distribution and ecology of Ceratopteris in Surinam. American Fern Journal 59:3-8, 1969.
    BibTeX

    @article{VanDonselaar1969,
    	title = "On the distribution and ecology of Ceratopteris in Surinam",
    	author = "Van Donselaar , J.",
    	journal = "American Fern Journal",
    	year = 1969,
    	pages = "3-8",
    	volume = 59
    }
    
  172. K C Vaughan, L G Hickok, T R Warne and A C Farrow. Structural analysis and inheritance of a clumped-chloroplast mutant in the fern Ceratopteris. Journal of Heredity 81:146-151, 1990.
    BibTeX

    @article{vaughn1990,
    	title = "Structural analysis and inheritance of a clumped-chloroplast mutant in the fern Ceratopteris",
    	author = "Vaughan , K.C. and Hickok , L.G. and Warne , T.R. and Farrow , A.C.",
    	journal = "Journal of Heredity",
    	year = 1990,
    	pages = "146-151",
    	volume = 81
    }
    
  173. K C Vaughn, T D Sherman and K S Renzaglia. A centrin homologue is a component of the multilayered structure in bryophytes and pteridophytes. Protoplasma 175:58-66, 1993.
    BibTeX

    @article{vaughn1993,
    	title = "A centrin homologue is a component of the multilayered structure in bryophytes and pteridophytes",
    	author = "Vaughn , K.C. and Sherman , T.D. and Renzaglia , K.S.",
    	journal = "Protoplasma",
    	year = 1993,
    	pages = "58-66",
    	volume = 175
    }
    
  174. D L Vogelien. Physiological characterization of NaCl-tolerant mutants from Ceratopteris richardii. University of Tennessee, Knoxville, Knoxville, TN, 1993.
    BibTeX

    @phdthesis{vogelien1993,
    	title = "Physiological characterization of NaCl-tolerant mutants from Ceratopteris richardii",
    	author = "Vogelien , D.L.",
    	school = "University of Tennessee, Knoxville",
    	year = 1993,
    	address = "Knoxville, TN"
    }
    
  175. D L Vogelien, L G Hickok and R M Auge. Solute analysis and water relations of gametophyte mutants tolerant to NaCl in the fern Ceratopteris richardii. Plant, Cell and Environment 16:959-966, 1993.
    BibTeX

    @article{vogelien1993b,
    	title = "Solute analysis and water relations of gametophyte mutants tolerant to NaCl in the fern Ceratopteris richardii",
    	author = "Vogelien , D.L. and Hickok , L.G. and Auge , R.M.",
    	journal = "Plant, Cell and Environment",
    	year = 1993,
    	pages = "959-966",
    	volume = 16
    }
    
  176. D L Vogelien, L G Hickok and T R Warne. Differential effects of Na+, Mg2+, K+, Ca2+ and osmotic stress on the wild type and NaCl-tolerant mutants, stl1 and stl2, of Ceratopteris richardii. Plant, Cell and Environment 19:17-23, 1996.
    BibTeX

    @article{vogelien1996,
    	title = "Differential effects of Na+, Mg2+, K+, Ca2+ and osmotic stress on the wild type and NaCl-tolerant mutants, stl1 and stl2, of Ceratopteris richardii",
    	author = "Vogelien , D.L. and Hickok , L.G. and Warne , T.R.",
    	journal = "Plant, Cell and Environment",
    	year = 1996,
    	pages = "17-23",
    	volume = 19
    }
    
  177. T R Warne and L G Hickok. Control of sexual development in gametophytes of Ceratopteris richardii: Antheridiogen and abscisic acid. Botanical Gazette 152:148-153, 1991.
    BibTeX

    @article{warne1991,
    	title = "Control of sexual development in gametophytes of Ceratopteris richardii: Antheridiogen and abscisic acid",
    	author = "Warne , T.R. and Hickok , L.G.",
    	journal = "Botanical Gazette",
    	year = 1991,
    	pages = "148-153",
    	volume = 152
    }
    
  178. T R Warne and L G Hickok. Evidence for a gibberellin-biosynthetic origin for the antheridiogen of Ceratopteris. Plant Physiology 89:535-538, 1989.
    BibTeX

    @article{warne1989,
    	title = "Evidence for a gibberellin-biosynthetic origin for the antheridiogen of Ceratopteris",
    	author = "Warne , T.R. and Hickok , L.G.",
    	journal = "Plant Physiology",
    	year = 1989,
    	pages = "535-538",
    	volume = 89
    }
    
  179. T R Warne and L G Hickok. (2-Chloroethyl)phosphonic acid promotes germination of immature spores of Ceratopteris richardii Brongn.. Plant Physiology 83:723-725, 1987.
    BibTeX

    @article{warne1987a,
    	title = "(2-Chloroethyl)phosphonic acid promotes germination of immature spores of Ceratopteris richardii Brongn.",
    	author = "Warne , T.R. and Hickok , L.G.",
    	journal = "Plant Physiology",
    	year = 1987,
    	pages = "723-725",
    	volume = 83
    }
    
  180. T R Warne and L G Hickok. Single gene mutants tolerant to NaCl in the fern Ceratopteris richardii: Characterization and genetic analysis. Plant Science 52:49-55, 1987.
    BibTeX

    @article{warne1987b,
    	title = "Single gene mutants tolerant to NaCl in the fern Ceratopteris richardii: Characterization and genetic analysis",
    	author = "Warne , T.R. and Hickok , L.G.",
    	journal = "Plant Science",
    	year = 1987,
    	pages = "49-55",
    	volume = 52
    }
    
  181. T R Warne, L G Hickok, T B Kinraide and D L Vogelien. High salinity tolerance conferred by the stl2 mutation of Ceratopteris richardii is associated with high K+ influx and efflux. Plant, Cell and Environment 19:24-32, 1996.
    BibTeX

    @article{warne1996,
    	title = "High salinity tolerance conferred by the stl2 mutation of Ceratopteris richardii is associated with high K+ influx and efflux",
    	author = "Warne , T.R. and Hickok , L.G. and Kinraide , T.B. and Vogelien , D.L.",
    	journal = "Plant, Cell and Environment",
    	year = 1996,
    	pages = "24-32",
    	volume = 19
    }
    
  182. T R Warne, L G Hickok, C E Sams and D L Vogelien. Sodium/potassium selectivity and pleiotropy in stl2, a highly salt-tolerant mutation of Ceratopteris richardii. Plant, Cell and Environment 22:1027-1034, 1999.
    BibTeX

    @article{warne1999,
    	title = "Sodium/potassium selectivity and pleiotropy in stl2, a highly salt-tolerant mutation of Ceratopteris richardii",
    	author = "Warne , T.R. and Hickok , L.G. and Sams , C.E. and Vogelien , D.L.",
    	journal = "Plant, Cell and Environment",
    	year = 1999,
    	pages = "1027-1034",
    	volume = 22
    }
    
  183. T R Warne, L G Hickok and R J Scott. Characterization and genetic analysis of antheridiogen-insensitive mutants in the fern Ceratopteris. Botanical Journal of the Linnean Society 96:371-379, 1988.
    BibTeX

    @article{warne1988,
    	title = "Characterization and genetic analysis of antheridiogen-insensitive mutants in the fern Ceratopteris",
    	author = "Warne , T.R. and Hickok , L.G. and Scott , R.J.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 1988,
    	pages = "371-379",
    	volume = 96
    }
    
  184. T R Warne and R M Lloyd. Gametophytic density and sex expression in Ceratopteris (Brongn.). Canadian Journal of Botany 65:362-365, 1987.
    BibTeX

    @article{warne1987c,
    	title = "Gametophytic density and sex expression in Ceratopteris (Brongn.)",
    	author = "Warne , T.R. and Lloyd , R.M.",
    	journal = "Canadian Journal of Botany",
    	year = 1987,
    	pages = "362-365",
    	volume = 65
    }
    
  185. T R Warne and R M Lloyd. Inbreeding and homozygosity in the fern Ceratopteris pteridoides (Hooker) Hieronymus (Parkeriaceae). Botanical Journal of the Linnean Society 83:1-13, 1981.
    BibTeX

    @article{warne1981,
    	title = "Inbreeding and homozygosity in the fern Ceratopteris pteridoides (Hooker) Hieronymus (Parkeriaceae)",
    	author = "Warne , T.R. and Lloyd , R.M.",
    	journal = "Botanical Journal of the Linnean Society",
    	year = 1981,
    	pages = "1-13",
    	volume = 83
    }
    
  186. T R Warne, D L Vogelien and L G Hickok. Analysis of genetically and physiologically complex traits using Ceratopteris: A case history of salt tolerance. International Journal of Plant Science 156:374-384, 1995.
    BibTeX

    @article{warne1995,
    	title = "Analysis of genetically and physiologically complex traits using Ceratopteris: A case history of salt tolerance",
    	author = "Warne , T.R. and Vogelien , D.L. and Hickok , L.G.",
    	journal = "International Journal of Plant Science",
    	year = 1995,
    	pages = "374-384",
    	volume = 156
    }
    
  187. Y Watano and S Masuyama. Genetic differentiation in populations of the polymorphic fern Ceratopteris thalictroides in Japan. Journal of Plant Research 107:139-146, 1994.
    BibTeX

    @article{watano1994,
    	title = "Genetic differentiation in populations of the polymorphic fern Ceratopteris thalictroides in Japan",
    	author = "Watano , Y. and Masuyama , S.",
    	journal = "Journal of Plant Research",
    	year = 1994,
    	pages = "139-146",
    	volume = 107
    }
    
  188. Y Watano and S Masuyama. Inbreeding in natural populations of the annual polyploid fern Ceratopteris thalictroides (Parkeriaceae). Systematic Botany 16:705-714, 1991.
    BibTeX

    @article{watano1991,
    	title = "Inbreeding in natural populations of the annual polyploid fern Ceratopteris thalictroides (Parkeriaceae)",
    	author = "Watano , Y. and Masuyama , S.",
    	journal = "Systematic Botany",
    	year = 1991,
    	pages = "705-714",
    	volume = 16
    }
    
  189. C K Wen, R Smith and J A Banks. ANI1: A sex pheromone–induced gene in Ceratopteris gametophytes and its possible role in sex determination. Plant Cell 11:1307-1318, 1999.
    BibTeX

    @article{wen1999,
    	title = "ANI1: A sex pheromone--induced gene in Ceratopteris gametophytes and its possible role in sex determination",
    	author = "Wen , C.K. and Smith , R. and Banks , J.A.",
    	journal = "Plant Cell",
    	year = 1999,
    	pages = "1307-1318",
    	volume = 11
    }
    
  190. Y Yabe and K Yasui. On the life-history of Ceratopteris thalictroides Brongn.. Botanical Magazine 27:233-245, 1913.
    BibTeX

    @article{yabe1913,
    	title = "On the life-history of Ceratopteris thalictroides Brongn.",
    	author = "Yabe , Y. and Yasui , K.",
    	journal = "Botanical Magazine",
    	year = 1913,
    	pages = "233-245",
    	volume = 27
    }
    
  191. Y Yatabe, N Murakami, Y Watano and S Masuyama. Cryptic species in the fern Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae). I. Molecular analyses and crossing tests. Journal of Plant Research 115(1118):87-97, 2002.
    BibTeX

    @article{yatabe2002,
    	title = "Cryptic species in the fern Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae). I. Molecular analyses and crossing tests",
    	author = "Yatabe , Y. and Murakami , N. and Watano , Y. and Masuyama , S.",
    	journal = "Journal of Plant Research",
    	year = 2002,
    	number = 1118,
    	pages = "87-97",
    	volume = 115
    }
    
  192. G F Zhang, H Y Chen, R B Chen and B Q Gao. Characters of vascular plant communities in natural wetlands of Nanjing suburb. Shengtaixue Zazhi 26:145–150, 2007.
    BibTeX

    @article{zhang2007,
    	title = "Characters of vascular plant communities in natural wetlands of Nanjing suburb",
    	author = "Zhang , G. F. and Chen , H. Y. and Chen , R. B. and Gao , B. Q.",
    	journal = "Shengtaixue Zazhi",
    	year = 2007,
    	pages = "145--150",
    	volume = 26
    }