Cheilanthes skinneri (Hook.) T.Moore
Descripción
Rhizomes compact, horizontal, 2–4 mm diam.; rhizome scales linear, 4–5 mm long, bicolorous with dark reddish brown to black center and tan margins, the margins proximally with long hairs (1 mm); fronds to 50 cm long, approximate; stipes 1⁄2–2⁄3 the frond length, green to stramineous, grooved, sparsely clothed with pale linear scales and hairs; blades 2–4-pinnate-pinnatifid, broadly deltate to ovate-lanceolate, basal pair of pinnae exaggerated basiscopically, pinnae alternate to subopposite at blade base, often resulting in somewhat flexuous rachises, pinnule rachises and blade rachises with green stripes adaxially; segments deltatelanceolate; adaxial surfaces glabrous; abaxial surfaces glabrous except for sparse hairs or narrow scales (to 1 mm) on costae and major veins; veins conspicuous; sori marginal, with distinct false indusia 0.5 mm wide, broken into flaps 0.5–1 mm long; spores tan.A
Forma de vida
TerrestreB
Ejemplar revisado
BCS (Pray 1781, LAM, NY). Chih (Benítez 2007, MEXU). Chis (Breedlove 36706, DS). Col (McVaugh 15921, NY). DF (Rusby 370, NY). Dgo (Ibana García 792, US). Gro (Hinton 9476, MEXU, NY). Jal (Pringle 2586, MEXU, NY). Méx (Tejero-Díez 2409, IZTA). Mich (Díaz B. & García 6409, IEB). Mor (Lyonnet 863, MEXU, NY). Nay (Feddema 448, NY). Oax (Mickel 6902, NY). Sin (Breedlove 18047, NY). Son (Sanders 12525, UC). Ver (Ventura A. 8841, MEXU, NY).A
Elevación
50 – 2450 mA
Ecología y Hábitat
Moist, exposed or shaded banks.A
Tipo de vegetación
Selva mediana, Selva baja, Bosque de encinoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes skinneri is distinct in its deltate blades, stramineous stipes and rachises, and the indusia often interrupted into 0.5–1 mm long flaps. It is remarkable, considering the great difference in soral configuration, that C. skinneri apparently crosses with Hemionitis subcordata to form a fertile diploid hybrid, Hemionanthes gryphus (Mickel, 1987), which see for discussion.A