Elaphoglossum lanceum Mickel
Descripción
Rhizomes short-creeping to erect, 1 mm diam.; rhizome scales linear-lanceolate, reddish brown, 7 mm long; fronds clumped, 9–34 X 1.2–2.7 cm; phyllopodia absent; stipes 1⁄2 the frond length, with scales red-brown, strongly spreading, subulate, to 6 mm long; blades lanceolate to linear-lanceolate, membranaceous, bases cuneate, apices acuminate, margins entire to crenulate; veins conspicuous, free, simple or once-forked, 2–3 mm apart, at 35–40° angle to costa; hydathodes evident; blade scales orangebrown, subulate, 3–5 mm long, sparse; fertile fronds shorter than the sterile, ca. 16 cm long, bases cuneate, blade apices acuminate to subcaudate, blades shorter in proportion to the length of the sterile blades (to 13 cm long, 4.8 cm wide), stipes 2⁄3–4⁄5 length, scales mixed with the sporangia.A
Forma de vida
EpífitaA
Ejemplar revisado
Oax (Breedlove 65911, 65926, CAS; Mickel 5565, NY).A
Elevación
2300 – 2500 mA
Tipo de vegetación
Bosque de pino-encino, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Elaphoglossum lanceum is known only from a few collections, most of which have fronds only 12–20 cm long and distinctly lance-shaped. It resembles E. smithii (Baker) Christ of the West Indies, but E. lanceum is readily distinguished by its small size, thin texture, somewhat more blade scales, and highly fenestrate spore crests (vs. imperforate crests in E. smithii).A