Pellaea ribae A.Mend. & Windham
Descripción
Rhizomes compact, horizontal to ascending, 3–5 mm diam.; rhizome scales linear, concolorous orange-tan, somewhat flexuous at apices, entire, 1–1.3 X 0.1–0.2 mm; fronds monomorphic, 6–20 cm long, clumped; stipes 1⁄6–1⁄4 the frond length, black, lustrous, terete, densely lanose with white hairs of two lengths, dense curled hairs 1–2 mm long and straight ca. 5–6 mm long; blades linear-oblong, 1-pinnate, 1.5–3 cm wide; rachises straight; pinnae 8–28 pairs, mostly deflexed, increasingly so proximally, distally perpendicular to rachises, linear-oblong, 6–16 mm long, sterile ca. 5 mm wide, fertile ca. 2 mm wide, incurved, bases subcordate, apices rounded, coriaceous; adaxial surfaces glabrous; abaxial surfaces densely lanose; pinna margins undifferentiated, curved, protecting sori; spores brown.A
Forma de vida
TerrestreA
Ejemplar revisado
SLP (Heil 5347, BRY).A
Distribución
México (país) EndémicoA
Elevación
1260 – 1350 mA
Ecología y Hábitat
Dry gypsum ledges.A
Tipo de vegetación
Matorral de otro tipoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is unique in the genus in having lanose axes and abaxial pinna surfaces.A