Sphaeropteris horrida (Liebm.) R.M.Tryon
Descripción
Trunks 15–20 m tall, 25–40 cm diam.; stipes stramineous to tan, scabrous with stout scale bases but spines absent, scales conform, concolorous, tan, very narrow, with marginal 1-celled teeth generally darker than the scale itself, hairs absent on axes except in adaxial groove, some on adaxial segment midveins (usually 0 or 1); scales progressively narrower distally on frond until hairlike (1 cell wide) on abaxial costules and segment midveins; long hairs grading into narrow scales with bristle-like teeth; blades to 3 m long, bipinnate-pinnatifid; lamina glaucous beneath; pinnae stalked (1–3 cm); pinnules sessile (to 2 mm stalked), apices obtuse, slightly ascending, entire; veins 1–2 forked; sori medial at vein fork, indusia sphaeropteroid (globose), 0.5–0.8 mm wide, firm, splitting into 2–4 persistent segments.A
Forma de crecimiento
Árbol/arborescenteA
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 32474, DS, NY, 48209, MEXU; Münch 64, DS). Gro (González Locra 332d, MEXU; Velázquez 379, MEXU). Oax (Mickel 4003, NY; Rzedowski 19580, NY; Tenorio L. 2800, MEXU). Ver (Barrington 396, MEXU; Pérez & Riba 176, MEXU).A
Elevación
400 – 2450 mA
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
Sujeta a protección especial (Pr)C
Discusión taxonómica
Sphaeropteris horrida is distinct by its abundantly scaly stipes and rachises, the scales light golden brown with many dark setae, and the indusia completely enclosing the sporangia.A