Polytaenium cajenense (Desv.) Benedict
Descripción
Rhizomes short-creeping; rhizome scales linear-lanceolate, long-attenuate at apices, 3–4 X 0.3–0.5 mm; fronds 8–20 cm long, clumped; stipes alate, midribs prominent; blades coriaceous, oblanceolate, 2–3 cm wide at broadest point (2⁄3 up frond length), 1.5–2 mm wide at base, apices acute; veins obscure, anastomosing in a dense network, veins near blade margins forming areoles; sporangia (sori) in many anastomosing lines 1–10 mm long, sunken in grooves; spores pale yellowish, hyaline.A
Forma de vida
EpífitaA
Ejemplar revisado
Chis (Breedlove 34060, DS, 57378, CAS, ENCB; Martínez S. 10096, 16904, 25330, 25448, MEXU). Oax (Hernández G. 1933, CHAPU, MEXU; Mickel 6466, 6467, NY, UC). Ver (Valdivia 1826, XAL).A
Elevación
100 – 600 mA
Ecología y Hábitat
In dense wet forests of Atlantic slope.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Polytaenium cajenense is distinguished by its coriaceous, oblanceolate blades with sori in distinct grooves. The South American species, Polytaenium brasilianum (Desv.) Benedict (syn. =Antrophyum subsessile Kunze, a superfluous renaming), is very similar to, and possibly conspecific with, P. cajenense, according to Tryon and Stolze (1989: 87); we agree.A