Asplenium polyphyllum Bertol.
Descripción
Roots thin, fibrous, not proliferous; rhizomes suberect; rhizome scales black, clathrate, tips long-attenuate, 4–6 X 0.8–1 mm, entire; fronds clumped, (20–)30–60(–100+) cm long; stipes reddish brown to light brown, lustrous, 1–10(–25) cm X 1–2 mm, 1⁄20–1⁄4 of frond length, with scattered, hair-like, clathrate scales 1–2 mm at bases, adaxially with tan wings 0.1 mm wide; blades 1-pinnate, linear, (9–)20–50 X 1.5–2.5 cm, apices pinnatifid, proliferous buds subterminal (several pinnae proximal to blade apices); rachises castaneous, lustrous, with rare to sparse clavate hairs 0.3 mm wide, adaxially with brownish wings 0.1–0.3 mm wide; pinnae oblong, 50–80 pairs, 8–10(–22) X 4–6 mm, articulate, with rachis color extending onto pinna stalks, apices obtuse, margins crenate; veins simple, tips evident adaxially; indument abaxially of scattered tan, appressed, clavate hairs 0.1–0.3 mm long; sori (1–)2–5 pairs per pinna, on both sides of midveins; indusia whitish, 1.5–2.5 X 1 mm, margins subentire; spores reniform.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 32052, DS; Croat 47297, MO). DF (Lyonnet 905, ENCB, MEXU, MO). Gro (Hinton 11118, NY; Martínez S. 884, IEB, MO). Hgo (Sánchez M. 701, MEXU). Méx (Sánchez S. 427, US). Mor (Lyonnet 1410, CAS, ENCB, MEXU). Oax (Mickel 4600, 4917, NY, UC, 5270, ENCB, NY, UC, 7061, NY, US).A
Elevación
(2000–)2450–3050 mA
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Clathrate, non-occluded rhizome scales, buds in the axils of distal pinnae, sori regularly on both sides of the midveins, and broader indusia distinguish A. polyphyllum from A. monanthes. Asplenium polyphyllum is also similar to A. castaneum except the latter has more-rounded pinnae, erose indusia, and lacks proliferous rachial buds. Sánchez M. 701, from Hidalgo, resembles large forms of A. castaneum in size and shape of the pinnae, but has proliferous rachises.
This species was cited for Michoacán by Díaz-Barriga and Palacios-Rios (1992), but the specimen (Díaz B. & Zamudio 2668, ENCB, IEB) appears to be A. castaneum. This collection number was cited under both species by the authors.
A
This species was cited for Michoacán by Díaz-Barriga and Palacios-Rios (1992), but the specimen (Díaz B. & Zamudio 2668, ENCB, IEB) appears to be A. castaneum. This collection number was cited under both species by the authors.
A