Didymoglossum petersii (A.Gray) Copel.
Descripción
Rhizomes short- to long-creeping, slender, 0.1 mm diam.; rhizome hairs dense, dark brown, 0.1 mm long; roots absent; fronds 1 cm long, distant; stipes 1⁄4 to nearly 1⁄2 the frond length; blades ovate, 0.4 cm wide, bases cuneate, apices rounded, 0.3–0.5 mm long, margins membranaceous, with dark reddish brown forked or stellate hairs; veins free, false veins parallel to the true veins; sori one per blade, apical; involucres immersed in blade tissue, with mouths flaring, not bilabiate, concolorous.A
Ejemplar revisado
(Related to the synonym Trichomanes petersii) Chis (Sharp 451021, MEXU, US; Xolocotzi & Sharp X-651, US). Pue (Sharp 451021, 45321, US). Ver (Delgadillo 3393, UAMIZ; Rebolledo s.n., 19 Sep 1964, US).A
Elevación
1400 – 2200 mA
Ecología y Hábitat
Walls of calcareous sinkholes.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Trichomanes petersii is closely related to T. ovale (q.v.), which differs in having dark-lipped involucres and epiphytic habitat.A