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 (Country) endemicB
Elevación
1850–2200A
Tipo de vegetación
Bosque de pino-encino, Bosque de otro tipoA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
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