Argyrochosma peninsularis (Maxon & Weath.) Windham
Descripción
Rhizomes short, compact, horizontal or ascending; rhizome scales linear to lanceolate, orange-brown, 3–5 mm long, entire; fronds 18–37 cm long, clumped; stipes ca. 2⁄5 the frond length, atropurpureous, lustrous, terete, more or less scaly proximally; blades deltate to oblong-lanceolate, bipinnate-pinnatifid; rachises sparingly farinose and with sparse linear-lanceolate scales ca. 1 mm long; pinnae 7–12 pairs, narrowly oblong, short-petiolulate, the basal pair often slightly reduced; segments mostly oblong to ovate, not articulate, the dark color of the stalks passing into the base of segments, rarely stopping abruptly at bases, lacking hairs; sori on the distal 1⁄2–1⁄3 of the veins; segment margins plane, unmodified; sporangia 64-spored.A
Forma de vida
Usually epipetric.A
Ejemplar revisado
BCS (Brandegee 650, GH, NY, UC; Breedlove 43297, CAS, ENCB; Carter 2329, UC, 2408, MEXU, UC, US, 2684, UC; Jones 24154, ARIZ, MICH, NY, UC, US, 24561, US; Moran 18956, UC; Nelson & Goldman 7430, US; Pray 1771, LAM).A
Distribución
México (país) EndémicoA
Elevación
1200 – 2150 mA
Ecología y Hábitat
Dry rocky places, granite rocks.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Argyrochosma peninsularis is distinct by its non-articulate segments, black stipes and rachises, rachises farinose and bearing a few scales, and most primary pinnules sessile or short-petiolulate.A