Cheilanthes villosa Davenp. ex Maxon
Descripción
Rhizomes compact, horizontal, 2–3 mm diam.; rhizome scales linear-lanceolate, mostly bicolorous, with distinct black center and narrow light brown margins, 4–5 mm long with longattenuate tips, lustrous, entire; fronds to 30 cm long, clumped; stipes dark reddish brown, terete, densely clothed with scales imbricate, ascending, scattered, tan, lanceolate, 3–4 mm long, mixed with abundant reduced linear scales; blades narrowly lanceolate to ovate, 3–4-pinnate, 1.5–5 cm wide; pinnae 8–15 pairs, equilateral; abaxial scales deltate or ovate to lanceolate, shallowly cordate at base, often with overlapping basal lobes, conspicuous, strongly imbricate and spreading laterally, far exceeding the segment margins and conspicuous from the adaxial side, usually concealing ultimate segments abaxially, whitish with orange brown centers, erose-dentate, not ciliate; ultimate segments round to oval, bead-like, mostly less than 1 mm long; adaxial surfaces with scattered to dense curly white hairs; abaxial surfaces nearly glabrous except for a few curly white hairs; laminar margins recurved, but only weakly differentiated; sporangia 32-spored; spores brown. N=2n=90, apogamous (USA).A
Forma de vida
Rupícola, TerrestreB
Ejemplar revisado
Chih (Correll 22687, NY; Pringle 459, NY, UC). Coah (Cowan 3630, UC; Stanford et al. 202, ARIZ, NY, UC, US; Pray 2095, NY). Dgo (Chiang et al. 10004, CAS, LL, NY). Hgo (Pray 3099, LAM). NL (Chiang et al. 8017, CAS, LL, MEXU). Son (Baker 10424, ARIZ). Zac (Moreley 638, UC).
Unverified, Doubtful, or Mistaken Reports. Ags (reported by de la Cerda Lemus & Siqueiros, 1985, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Ags (reported by de la Cerda Lemus & Siqueiros, 1985, but not verified).
A
Elevación
1450 – 2400 mA
Ecología y Hábitat
Cliffs and rocky slopes, usually on limestone.A
Tipo de vegetación
Selva bajaB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes villosa is distinct by its large deltate scales on costae abaxially (2 mm wide and spreading, visible from adaxial side) and scattered curly hairs adaxially.A