Cheilanthes chaerophylla Kunze
Descripción
Rhizomes stout, compact, horizontal; rhizome scales linearlanceolate, 2–3 mm, concolorous, dark castaneous to black, lustrous; fronds 30–52 cm long, clumped; stipes 14–34 cm long, 1⁄2–3⁄4 the frond length, castaneous, grooved, glabrous; blades 12–20 X 12–20 cm (length:width ratio 0.8–1.1:1), tripinnate-pinnatifid to quadripinnate, strongly deltate or pentagonal, basal pinnae largest, glabrous on both surfaces; pinna pairs 15–20 (distal 2–3 pairs entire, upper median 5–8 pairs pinnate, lower median 3–5 pairs bipinnate, basal 1–3 pairs tripinnate), terminal segments pinnatifid, ovate, 0.4–0.8 cm X 2–3 mm (length:width ratio 1.8–3:1); basal pinnae tripinnate, exaggerated basiscopically, 10–14 X 7–10 cm (length:width ratio 1.1–1.8:1), (12–)14–16 pinnule pairs (distal 2–6 pairs entire, median 5–7 pairs pinnate, 1–5 basal pairs bipinnate); basal basiscopic pinnule 7–7.5 cm long, with 10–12 lobes, terminal segment 2–3 mm wide, basal lobe with 4–7 lobules; adaxial and abaxial surfaces glabrous, the veins prominent abaxially; sori at vein endings, laminar margins curved, strongly modified into 0.3–0.5 mm wide false indusia, margins suberose, surfaces slightly whitened; spores black.A
Forma de vida
Rupícola, TerrestreB
Ejemplar revisado
Chis (Breedlove 22683, NY). Col (McVaugh 16108, NY). DF (Lyonnet 239, MEXU). Dgo (Maysilles 7003, MEXU). Gro (Hinton 9491, NY). Gto (Rzedowski 40579, IEB). Jal (Pringle 2026, NY). Méx (Mickel 680, NY). Mich (Hinton 12609, NY). Mor (Ramírez R. 60, XAL). Nay (Avelar Muñoz 16911, UC). Oax (Mickel 1318, NY). Pue (Purpus 4176, UC). Sin (Bartholomew 2516, NY). Son (Perrill 5256, MEXU).A
Elevación
(500 –)900 – 2500(– 3200) mA
Ecología y Hábitat
Exposed or shaded banks.A
Tipo de vegetación
Bosque de encino, Selva baja, Matorral espinosoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes chaerophylla is the most widespread member of the C. angustifolia complex, which includes also C. cuneata and C. decomposita. See discussion under C. angustifolia.A