Pellaea wrightiana Hook.
Descripción
Rhizomes compact, ascending, 5–10 mm diam.; rhizome scales linear-subulate, bicolorous, erose-denticulate, 0.1–0.3 mm wide at bases; fronds monomorphic, to 40 cm long, clumped; stipes 1⁄3–2⁄5 the frond length, dark brown, lustrous, adaxially flattened or shallowly grooved, glabrous; blades linear-oblong, 2-pinnate, 1.5–5 cm wide; rachises straight, glabrous; pinnae perpendicular to rachises or slightly ascending, with 3–9 ultimate segments; ultimate segments narrowly oblong, 5–20 mm long, each with mucronate apices, coriaceous, glabrous; adaxial and abaxial surfaces glabrous; sporangia 64-spored, mixed with sparse farina; spores brown; n=2n=87, 116 (USA).A
Forma de vida
TerrestreA
Ejemplar revisado
BCN (Brandegee s.n., 14 May 1893, UC; Wiggins & Demaree 5024, DS, US). BCS (Gentry 4283, GH, MO; Gentry & Fox 11775, MEXU, US). Chih (Johnston 8090, GH; Pennell 19209, US; Wendt et al. 9971, MEXU, NY). Coah (Johnston & Muller 1309, GH, US). Son (Druery s.n., ca. 1895, US; White 4222, MICH).A
Elevación
1450 – 2200 mA
Ecología y Hábitat
Cliffs and rocky slopes.A
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
According to Windham (in FNA Ed. Comm., 1993: 182), P. wrightiana, a tetraploid, hybridizes with Pellaea truncata and P. ternifolia subsp. arizonica to produce sterile triploids and tetraploids with intermediate morphology and malformed spores.A