Didymoglossum ovale E.Fourn.
Descripción
Rhizomes long-creeping, slender, 0.1 mm diam.; rhizome hairs dark brown, 0.1 mm long; roots absent; fronds 2–8 mm long, distant; stipes 1–4 mm long, 1⁄4–1⁄2 the frond length, with hairs similar to those of rhizomes; blades obovate to narrowly oblanceolate, entire or occasionally shallowly to deeply lobed, 2–4 mm wide, bases cuneate to cordate, apices rounded, margins membranaceous, with sparse, black or reddish brown, stellate hairs; veins pinnate to flabellate, free, false veins parallel to the true veins; sori one per blade; involucres immersed to partly exserted, with bilabiate lips, dark-margined with a few rows of darkened cells.A
Forma de vida
EpífitaA
Ejemplar revisado
(Related to the synonym Trichomanes ovale) Chis (Breedlove 38177, DS; Martínez S. 14882, ENCB, UAMIZ, 25325, MEXU; Riba 1370, UAMIZ). Oax (Mickel 6870, NY). Tab (Cowan 3141, CAS, MEXU, NY).
Unverified, Doubtful, or Mistaken Reports. QR (Castillo-Rivero 349, UADY, XAL, cited by Palacios-Rios, 2002c, but not verified).A
Unverified, Doubtful, or Mistaken Reports. QR (Castillo-Rivero 349, UADY, XAL, cited by Palacios-Rios, 2002c, but not verified).A
Elevación
150 mA
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Trichomanes ovale is closely related to Trichomanes petersii in being small, lacking submarginal veins, and possessing stellate marginal hairs, but the latter is distinct in lacking the dark involucral margins typical of T. ovale. The variable fronds (some narrowly lanceolate, some variously lobed), some stellate hairs at the tips of pinnae, and the strongly exserted sori with wide lips separate this species from other members of sect. Didymoglossum.A