Asplenium insolitum A.R. Sm.
Descripción
Roots coarse, fibrous, not proliferous; rhizomes short-creeping; rhizome scales blackish, clathrate, walls thick, lumina very small, 1–2 X 0.5–0.8 mm, entire; fronds few, 1–2 mm apart, 35–45 cm long; stipes brownish, dull, ca. 16 cm X 1.5 mm, ca. 1⁄2 of frond length, glabrous or bases with rare scales, adaxially with green wings ca. 0.2–0.3 mm wide; blades membranaceous, deltate, not or only slightly reduced (1 or 2 pairs) at bases, apices attenuate, 2-pinnate, 18–25 X 4–8 cm, not proliferous; rachises brown, dull, glabrous, with green wings ca. 0.2–0.3 mm wide; pinnae deltate, 15–20 pairs, 1.5–6 X 1.5–5 cm, stalked to ca. 2 mm, pinnate, pinnules flabellulate, 4–8 pairs per pinna, 5–9 X 3–5 mm, basally cuneate, apically dentate; veins 1- or 2-forked, or to 4 pairs in the larger pinnules, visible on both sides of blades, tips barely evident adaxially; indument abaxially of brownish clavate hairs ca. 0.1 mm long; sori 1–5 per ultimate segment, occasionally diplazioid on basal segments, on both sides of midveins; indusia whitish, 1–2.5 X 0.3 mm, margins suberose to entire; spores reniform.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 25760, DS). Gro (Velázquez 138, 853, FCME). Oax (Mickel 3810a, NY).A
Distribución
México (país) EndémicoA
Elevación
1850 – 2200A
Tipo de vegetación
Bosque de pino-encino, Bosque de otro tipoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This is similar to Asplenium breedlovei and differs in having broader, less divided segments (blades only 2-pinnate to 2-pinnate-pinnatifid vs. 3–4-pinnate). There is also similarity to A. Venturae, which differs in having erect rhizomes. The tapered, non-flagelliform, nonproliferous blade apices and dull brown stipes distinguish it from A. flabellulatum.A