Didymoglossum membranaceum (L.) Vareschi
Descripción
Rhizomes slender, 0.5(–0.8) mm wide, long-creeping; rhizome hairs dark brown, 0.8–1 mm long; roots present; fronds 2–6 cm long, distant; stipes short, 1–1.5 mm long, 1 mm diam., with dense, dark brown hairs 0.8–1 mm long; sterile blades orbicular and entire to divided into ragged, cuneate segments, 1.5–4 mm long and wide, laminar surfaces glabrous, abaxial and adaxial margins with overlapping, orbicular, grayish brown scales 1–1.5 mm diam.; fertile blades broadly to narrowly cuneate, often divided into ragged lobes, glabrous, margins with scattered orbicular scales like those of sterile fronds or glabrous; veins free, forked, false veins parallel to true veins, unconnected; involucres immersed to stalked, 0.5 mm wide at middle, 1.5–1.8 mm long, mouths 0.8 mm wide, dark-margined, bilabiate; 2n=68 (Jam).A
Forma de vida
Epífita, o Epipétrica. TerrestreA
Ejemplar revisado
(Related to the synonym Trichomanes membranaceum) Chis (Espejo & Hernández 1441, UAMIZ). Tab (Gilly & Hernández X. 284, UAMIZ, US). Ver (Pérez García 35, UAMIZ; Wendt et al. 3844A, NY).A
Elevación
350 – 600 mA
Ecología y Hábitat
On banks in wet forests.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Trichomanes membranaceum) The diverse nature of the fronds, from orbicular to narrowly cuneate proximally, marginal orbicular scales, and unconnected, parallel false veins distinguish this species.A