Abrodictyum rigidum (Sw.) Ebihara & Dubuisson
Descripción
Rhizomes stout, 5–7 mm diam., erect or ascending, to 4 cm long; rhizome hairs dark brown, stiff, lustrous, 1–1.5 mm long; roots present; fronds 20–35 cm long, clumped; stipes 1⁄2 the frond length, stout, 0.8–1 mm diam., brown, non-alate, glabrous except with hairs at base like rhizome hairs; blades 3–4-pinnate, 10–15 cm wide, subdeltate or broadly ovate, dark green; rachises glabrous except for stubby blackish hairs; pinnae 12–20 pairs, petiolulate, ascending or spreading, with occasional stubby blackish hairs, ultimate segments linear, 0.3–0.5 mm wide, margins entire; veins free, false veins absent; involucres stalked with narrow lateral wings, 1.0–1.2 X 0.3–0.5 mm, mouths not flared, entire, slightly bilabiate, concolorous; 2n=66 (Jam).A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Trichomanes rigidum) Chis (Breedlove 32413, MICH, 32542, DS, MICH, NY). Oax (Hernández G. 1719, UAMIZ; Mexia 9275, NY; Mickel 943, ISC, MICH, 1035, MICH, NY, 1559, 5692, NY; Rzedowski 30684, NY). Ver (Wendt et al. 4802, NY).A
Elevación
300 – 1650 mA
Ecología y Hábitat
Atlantic slope.A
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Trichomanes rigidum) One of the few terrestrial species of Mexican Trichomanes, T. rigidum is distinct by its erect rhizomes, coarse, non-alate stipes, and finely dissected blades.A