Didymochlaena truncatula (Sw.) J.Sm.
Descripción
Rhizome scales tan to brownish, concolorous, 10–20 X 1–2 mm, linear-lanceolate; stipes stramineous, 40–45 cm long, 1⁄3 the frond length, with scattered scales like those of rhizome, especially at base, and a dense undercovering of matted, tortuous, woolly hairs; blades 70–90 X 30–45 cm, rachises similar to stipes; proximal pinnae somewhat shortened; pinnae numerous, 19–30 X 3–4 cm; costae with scales and lax, matted hairs and with clusters of 2–10 awns (0.6–0.8 mm long) at pinnule attachments; pinnules oblong, 1–2.5 X 0.5–1 cm, entire rounded or crenate at apex, basal ones of each pinna somewhat smaller; blades dark green, glabrous on both surfaces, chartaceous; sori 3–5 per pinnule, along acroscopic side or 1–2 at tip of pinnules; indusia tan, 1–2.5 X 1–1.5 mm, entire; 2n=82 (CR).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 48436, 50459, CAS; Dressler 1607, MEXU, US; Ton 6742, MEXU, UC). Oax (Hallberg 1746, NY, UC; Hernández G. 1969, CHAPA, NY; Wendt et al. 3722, CHAPA, NY, UC). Pue (Campos V. 411, IEB). Ver (Fink 95, US; Ventura 8119, ENCB, NY).A
Elevación
200 – 1700 mA
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
Preocupación menor (LC)B
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Didymochlaena truncatula is easily distinguished by the unique horseshoe-shaped sori and indusia, the large bipinnate blades with entire articulate pinnules, and the awns borne along the ridges of the costae adaxially.A