Cheilanthes allosuroides Mett.
Descripción
Rhizomes compact, horizontal, 2–3 mm diam.; rhizome scales linear, concolorous, orange-brown, 3–4 mm long, entire; fronds to 30 cm tall, clumped; stipes ca. 1⁄3 the frond length, grooved, dark castaneous to purplish brown, lustrous, with sparse, 2 mm long, appressed hairs, older fronds with articulation lines proximally, abscised old fronds leaving stipe bases 1–1.5 cm long; rachises glabrous except for a few scattered or sparse linear tan scales at pinna bases; blades lanceolate, 2–3-pinnate, texture firm; pinnae 8–13 pairs, segments mostly elliptical to lanceolate, often auriculate; adaxial surfaces glabrous and minutely papillate; abaxial surfaces glabrous except for a few long hairs on costae; sori elongate along vein ends, segment margins curved, firm, somewhat modified, thin only at the minutely erose edges; spores tan.A
Forma de vida
Rupícola, TerrestreB
Ejemplar revisado
Ags (Reeder et al. 3339, ARIZ). Chih (Pringle 1443, NY). DF (Pringle 11271, NY). Dgo (Shreeve 9187, ARIZ). Gto (Sohs 337, US). Hgo (Orcutt 6237, MEXU). Jal (Pringle 5399, NY). Méx (Rose 11039, NY). Mich (Arsène s.n., 9 Aug 1909, MICH). Nay (Breedlove 45565, CAS). Oax (Mickel 4952, NY). Pue (Purpus 3148, NY). Qro (Rose 11179, NY). SLP (Parry & Palmer 979, NY). Sin (Breedlove 43871, CAS, MEXU). Son (Boutin & Kimnach 3677, NY). Ver (Botteri 38, BM). Zac (Reveal 2675, US).A
Distribución
México (país) EndémicoA
Elevación
1000 – 2400A
Ecología y Hábitat
Dry, rocky slopes, on basaltic or other rocks (all acidic, apparently).A
Tipo de vegetación
Bosque de encino, Selva baja, Matorral crassicauleB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
The poorly differentiated false indusia, sori elongate along the veins, and scattered linear scales on the major axes resemble those of C. notholaenoides and C. cucullans, but the glabrous blade surfaces and grooved rachises with only sparse scales distinguish C. allosuroides. It is related to C. wrightii, but the sori are protected by long continuous indusia rather than only interrupted lobes in C. wrightii. Cheilanthes allosuroides is generally taller than C. wrightii (15–30 cm vs. 8–22 cm) and has scales limited to pinna bases (vs. scattered scales on stipes).A