Cheilanthes myriophylla Desv.
Descripción
Rhizomes compact, horizontal, 2–3 mm diam.; rhizome scales linear-lanceolate, bicolorous, with black to dark brown, lustrous, central streak and tan margins, ca. 5 mm long, entire; fronds to 45 cm long, clumped; stipes ca. 1⁄3 the frond length, castaneous to atropurpureous, terete, liberally clothed with appressed pale hairs 2 mm long and occasional linear scales 2 mm long; blades narrowly to ovate-lanceolate, 4-pinnate, the segments bead-like, 0.5 mm wide, discrete; adaxial surfaces glabrous or with scattered, fine, flexuous, white hairs; abaxial surfaces obscured by white to rusty brown ovate-lanceolate non-ciliate scales on axes, covering the segments, and overlying the scattered tan, flexuous hairs on the segments; laminar margins recurved, but only slightly modified into 0.1–0.3 mm wide false indusia; spores tan; 2n=174 (Peru), ca. 180 (Mor).A
Forma de vida
Rupícola, TerrestreB
Ejemplar revisado
Ags (McVaugh 23709, NY). BCS (Carter 2046, DS). Chih (Pringle 829, NY). DF (Mexia 2665a, NY). Dgo (Palmer 552, NY). Gro (Lorea 593, ENCB). Gto (McVaugh 24248, NY). Hgo (Orcutt 3927, NY). Jal (Jones 27018, NY). Méx (Ventura V. 464, NY). Mich (McVaugh 18163, NY). Mor (Ramirez R. 59, XAL). Nay (Breedlove 45562, CAS). Oax (Mexia 9118, NY). Pue (Dunn et al. 23333, NY). Qro (Sohmer 9260, NY). Sin (Breedlove 44894, ENCB). SLP (Parry & Palmer 987, NY). Son (Gentry et al. 19322, NY). Tlax (Sohns 615, MEXU). Ver (Seaton 287, NY). Zac (McVaugh 17759, NY).A
Elevación
900 – 3000 mA
Ecología y Hábitat
Dry, rocky slopes, basalt or limestone.A
Tipo de vegetación
Selva baja, Bosque de encino, Bosque de pino-encino, Bosque de pino, Matorral crassicaule, Matorral espinoso, Matorral de otro tipoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes myriophylla resembles C. lendigera in its bead-like segments but is distinct by its dense covering of scales rather than hairs on the segments abaxially. Cheilanthes myriophylla is also similar to C. wootonii, C. covillei, and C. clevelandii in the bead-like segments and scaly blades, but the rhizomes of C. myriophylla are compact (vs. creeping) and usually with hairs on the adaxial blade surfaces.A