Asplenium serra Langsd. & Fisch.
Descripción
Roots coarse, fibrous, not proliferous; rhizomes short-creeping to suberect; rhizome scales black, dense, clathrate, tips filiform, 5–7 X 0.5–1 mm, entire; fronds clumped, (30–)50–150 cm long; stipes castaneous to atropurpureous, dull, 10–40 cm X 2–8 mm, 1⁄3 of frond length, decidedly scaly at bases, glabrous or glabrescent distally, not winged; blades thick-chartaceous to subcoriaceous, 1-pinnate, 24–95 X 10–25 cm, narrowly deltate, not radicant, each blade with a subconform terminal pinnae; rachises castaneous to atropurpureous, dull or sublustrous, abaxially with scattered, tan, twisted, hair-like scales 1–3 mm long, not winged; pinnae lanceolate, 6–15(–20) pairs, 7–15(–20) X 1.5–2(–3) cm, stalked to 5 mm, ± equilateral, exauriculate, bases broadly cuneate to truncate, apices long-attenuate, margins serrate or biserrate; veins mostly 2–3-forked, at 5–30° angle from costae, tips not strongly evident adaxially, but veins visible on both surfaces; indument abaxially of scattered, tan, pectinate or substellate scales 0.1–0.5 mm long; sori 5–15 pairs per pinna, on both sides of and nearly parallel to costae; indusia 5–20 X 0.8–1 mm, margins entire; spores reniform; 2n=144 (Galapagos), ca. 288 (Trin).A
Forma de vida
Epífita occasionally terrestrialA
Ejemplar revisado
Chis (Breedlove 22025, DS; Hernández & Ton 532, MO, UC). Gro (Hinton 14279, MO, NY, US; Lorea 3028, FCME). Hgo (Moore 3210, UC). Oax (Mickel 5941, MEXU, NY; Wendt et al. 4659, MEXU, NY). Pue (Arreguín 548, CHAPA, ENCB). Ver (Purpus 6434, MO, NY, UC, US; Ventura A. 12354, MO).A
Elevación
600–2800 mA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Asplenium serra is a member of sect. Sphenopteris, a group characterized by scaly rachises and sori at relatively small, acute angles with respect to the midribs. The most nearly related con geners in Mexico are A. dissectum and A. praemorsum. From the former A. serra is readily distinguishable by the larger, less incised, much longer, thicker-textured pinnae and non-glandular stipes, from the latter, by the 1-pinnate (vs. 2-pinnate) blades.A