Pellaea andromedifolia (Kaulf.) Fée
Descripción
Rhizomes long-creeping, 2–4 mm diam.; rhizome scales linearlanceolate, bicolorous, black with brown margins, irregularly dentate; fronds 10–60 cm long, 0.5–1 cm distant; stipes ca. 1⁄2 the frond length, stramineous to gray, terete or flattened adaxially, dull, glabrous, hairy or scaly; blades elongate-deltate, 2–3-pinnate, to 20 cm wide; pinnae ascending or perpendicular to rachises, costae straight; ultimate segments elliptic to ovate, truncate to subcordate at bases, rounded apices, 3–15 mm, herbaceous, veins visible, margins recurved on fertile segments; surfaces glabrous to sparsely pubescent; sporangia 64- or 32-spored; 2n=58 (USA).A
Forma de vida
TerrestreA
Ejemplar revisado
BCN (Atwood 20667, NY; Carter et al. 1047, UC; Ceta & Salgado 7428, ENCB; Montgomery 83-20, 83-33, NY; Pray 16645, NY; Shreve 6834, MICH; Wiggins 5152, 9967, US). Cedros Island (Palmer 749 1⁄2, NY).A
Elevación
0 – 500(– 1100) mA
Ecología y Hábitat
Rocky slopes and ledges, usually on igneous substrates.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
According to Windham (in FNA Ed. Comm., 1993), Pellaea andromedifolia comprises three cytotypes: a sexually reproducing diploid, an apogamous triploid, and an apogamous tetraploid. The apogamous tetraploid apparently resulted from hybridization between diploid and triploid individuals (Gastony & Gottlieb, 1985).A