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vol.46 issue4Anatomía y usos de la madera de ocho especies tropicales de Quintana Roo, MéxicoGeneric Composition, Structure and Diversity of Secondary Forests at Amisconde, the Pacific Slope of the Cordillera de Talamanca, Costa Rica author indexsubject indexarticles search
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Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


PEREZ-GARCIA, Blanca; RIBA, Ramón; MENDOZA, Aniceto  and  REYES J., Irma. Compared gametophytic development of three species of Phebodium (Polypodiaceae, s.str.). Rev. biol. trop [online]. 1998, vol.46, n.4, pp.1059-1067. ISSN 0034-7744.

A comparison was made of the gametophytic development of Phlebodium araneosum, P. pseudoaureum and P. decumanum. Spores were collected from several Mexican localities ranging in altitude from 30 to 2300 m and sown on agar with mineral salts. Similarities in germination type and prothallial development were observed. Adult gametophytes are cordate-spathulate to cordate-reniform; gametangia are of the tipical type of the common leptosporangiate ferns. All three species share similar morphogenetic features of the gametophytes, and these do not lend additional characteristics to support the distinction of Phlebodium from Polypodium, Microgramma and Niphidium, as regard the sexual phase.

Keywords : Gametophyte; México; Microgramma; morphogenesis; Niphidium; Phlebodium; Polypodiaceae; Pteridophyta.

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