Cheilanthes tomentosa Link
Descripción
Rhizomes compact, horizontal, 2–3 mm diam.; rhizome scales linear-lanceolate, mostly bicolorous, with dark brown to black center and narrow orange-tan margins, lustrous, 3–4 mm long, entire; fronds to 45 cm long, clumped; stipes ca. 1⁄3 the frond length, castaneous, terete, with orange-tan jointed hairs and filiform scales ca. 1 mm long; blades narrowly lanceolate to narrowly oblong, 3–4-pinnate, 1.5–8 cm wide; rachises terete, with scattered linear scales and some jointed hairs; pinnae 13–25 pairs, equilateral; segments oval to oblong, rounded, pouch-like, the largest 1–2 mm diam.; adaxial surfaces tomentose with fine curved hairs; abaxial surfaces with costal scales linear, truncate at base, inconspicuous, loosely imbricate, not concealing segments, entire, not ciliate; segments abaxially densely tomentose; laminar margins recurved, slightly differentiated as false indusia, not decurrent; sporangia 32-spored; spores brown. N=2n=90, apogamous (NL, Tam, USA).A
Ejemplar revisado
Chih (Knobloch 5946, NY). Coah (Palmer 1391, NY; Wynd & Mueller 337, NY). Hgo (Orcutt 6253, DS). NL (Pringle 2776, MEXU). SLP (Ortega O. 00359, NY). Son (Hartman 360, UC). Tam (Stanford et al. 2619, NY). Ver (Conant 715, MEXU; Faden et al. 76/65, UC).A
Elevación
600 – 2400 mA
Ecología y Hábitat
Rocky slopes and ledges, on a variety of substrates including limestone and granite.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Cheilanthes tomentosa is closely related to C. eatonii, but differs by having narrower (filiform), inconspicuous costal scales (these more evident in C. eatonii).A