Polypodium fissidens Maxon
Descripción
Rhizomes creeping, 4 mm diam., glaucous; rhizome scales orange-tan, lanceolate, entire, 4–5 X 2 mm; fronds 17–62 cm long, distant; stipes 1⁄4–1⁄3 the frond length, stramineous to castaneous, glabrous; blades pinnatisect, deltate, 5.5–25 cm wide, apices pinnatifid; pinnae 13–30 pairs, 2.5–13 cm X 5–11 mm, linear, broadly adnate, the proximal pinnae slightly constricted at bases, margins sharply serrate; abaxial blade surfaces with erect hairs 0.3–0.5 mm scattered on surfaces, dense on costae and rachises; adaxial blade surfaces with sparse hairs; veins free, ending in coarse teeth; sori round, medial; sporangia setose with hairs 0.1 mm.A
Forma de vida
EpífitaA
Ejemplar revisado
Chis (Breedlove 21996, 22006, 23021, 32009, DS, NY, 32061, 32068, DS, 69852, CAS; González-Espinosa et al. 580, CHAPA; Mickel 1241, NY; Münch 66, DS).
A
A
Elevación
(2400 –)2700 – 2900 mA
Tipo de vegetación
Bosque de pinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Polypodium fissidens is distinct by the sharp teeth of the pinna margins.A