Polypodium californicum Kaulf.
Descripción
Rhizomes creeping, 5–10 mm diam.; rhizome scales brown, concolorous, ovate-lanceolate with twisted tips, 5–6 mm long, margins denticulate; fronds 10–22 cm long, clumped; stipes 1⁄3–1⁄2 the frond length, stramineous, glabrous; blades pinnatifid, lanceolate, 4.5–9 cm wide; pinnae 8–12 pairs, 2–5(–7.5) cm X 7–10 mm, tips broadly acute; laminae thin, herbaceous, glabrous except for rare jointed hairs 1 mm long in pinna axils and rare minute, clavate hairs 0.1 mm long along rachises; margins toothed; veins free or with occasional anastomoses; sori round, in a single row on each side of costae; sporangia glabrous; 2n=74 (Calif).A
Forma de vida
Epipétrica.A
Ejemplar revisado
BCN (Van Devender 92-318, ARIZ; Wiggins 4236, CAS, MICH). BCS (Coronados Is., Anthony s.n., in 1895, UC). DF (Lyonnet 85, MEX). Gto (Rzedowski 47916, IEB). Guad (Rose 16015, NY, US). Méx (Rose & Painter 7946, US). Oax (Mickel 7426, NY). Pue (Reeves R5804, ASC). Qro (Rzedowski 44464, IEB). Rev (Mason 1533, CAS, US). Ver (Beaman 2171, MSC).A
Elevación
100–600 in Baja California. 2150 – 3950 mA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Polypodium californicum belongs to the circumboreal P. vulgare complex. It is distinct in its glabrous, pinnatisect blades with free to netted veins. In Mexico, it is most closely related to P. hesperium, which differs in its smaller, narrower, totally glabrous blades, and P. scouleri, confined in Mexico to Guadeloupe Island, which has fewer pinnae and coriaeous blades. Molecular evidence shows that P. plesiosorum is also closely related.A