Resumo

PEREZ-GARCIA, Blanca; RIBA, Ramón; MENDOZA, Aniceto  e  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.

Palavras-chave : Gametophyte; México; Microgramma; morphogenesis; Niphidium; Phlebodium; Polypodiaceae; Pteridophyta.