Cheilanthes marginata Kunth
Descripción
Rhizomes compact, horizontal, 2–3 mm diam.; rhizome scales linear-subulate, bicolorous, dark brown- to black-centered with brown to tan margins, lustrous, 3 mm long; fronds to 20(–35) cm long, clumped; stipes 1⁄2–2⁄3 the frond length, castaneous, lustrous, grooved, glabrous; blades ovate to deltate, 2–3-pinnatepinnatifid; segments obcuneate, obtuse; adaxial surfaces pebbly, but without papillae; abaxial surfaces glabrous; laminar margins recurved, strongly modified into 0.5 mm wide false indusia with long-fimbriate margins (hairs 0.3 mm long), otherwise glabrous, very long-decurrent to subtending segment; spores brown.A
Forma de vida
Rupícola.B
Ejemplar revisado
Ags (McVaugh 18429, MICH). Chis (Breedlove 15267, NY). Col (Goldsmith 69, UC). DF (Rusby 366, NY). Gro (Martínez S. 5624, MEXU). Gto (Rzedowski 41350, IEB). Hgo (Medina-Cota & Barrios 3739, NY, TEX). Méx (Fisher 35408, NY). Mich (Hinton 13497, NY, TEX). Mor (Pringle 15701, LL). NL (Hinton et al. 22153, TEX). Oax (Mickel 7432, NY). Pue (Ventura A. 1393, NY). Qro (Díaz B. & Carranza 7366, IEB). SLP (Schaffner s.n., Oct 1876, NY p.p.). Ver (Seaton 278, NY).A
Elevación
2000 – 4000 mA
Ecología y Hábitat
Among rocks.A
Tipo de vegetación
Bosque de pino, Bosque de pino-encinoA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes marginata is most closely related to C. pyramidalisand differs from that, as well as other members of the complex, in the non-spiculate, very long-decurrent, broad indusia with fimbriate margins. Mickel 4574 (NY) shows a few papillate hairs but not to the degree found in C. pyramidalis. See C. pyramidalis for further discussion.A