Polypodium scouleri Hook. & Grev.
Descripción
Rhizomes creeping, glaucous, 5–6 mm diam.; rhizome scales lustrous brown, lanceolate, subconcolorous (castaneous centers with slightly paler narrow margins), entire to minutely denticulate near apices, 3–5 X 1.5–2 mm; fronds 13–30 cm long, distant; stipes 1⁄3–1⁄2 the frond length, orange-tan, with scales lanceolate to deltate-attenuate, slightly bicolorous; blades pinnatisect, lanceolate-deltate, very coriaceous, deltate, 8–10 cm wide; pinnae 3–8 pairs, 4–5 X 1–1.6 cm, oblong, entire, apices rounded; abaxial blade surfaces glabrous except for sparse dark, deltate, attenuate scales 2–4 mm long; adaxial blade surfaces glabrous; venation anastomosing, obscure; sori round, near costae, ca. 4 mm diam.; sporangia glabrous; 2n=74 (USA).A
Forma de vida
EpífitaA
Ejemplar revisado
Guad (Hanna s.n., 15 July 1922, CAS, US; Moran 6420, 6422, UC; Newcomb 169, UC, US; Palmer 104, NY; Rico C. 5, CHAPA; Wiggins & Ernst 46, UC).A
Elevación
0 – 550 mA
Tipo de vegetación
Bosque de pinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Polypodium scouleri is distinct by its very leathery fronds with few, apically rounded, entire pinnae and sori over 3 mm diam. Its venation is mostly netted but quite variable.A