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
Bibliografía
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]