Pleopeltis fallax (Schltdl. & Cham.) Mickel & Beitel
Descripción
Rhizomes long-creeping, 0.6–0.8 mm diam., green; rhizome scales monomorphic, black, clathrate, 0.5 mm long, ovate, thickwalled, with cluster of long brown hairs (ca. 1 mm long) at central point of attachment, rhizomes thus appearing densely pubescent; fronds monomorphic, distant; stipes ca. 1⁄3 the frond length, light brown with very narrow decurrent wing, with very sparse, minute, 0.3–0.5 mm, dark, appressed scales; blades oblong to narrowly deltate, 2–4 X 1–2 cm, pinnate-pinnatifid, pinnae 4–7 pairs, opposite to alternate, adaxially glabrous; midribs abaxially greenish to yellowish or light brown primarily at blade bases, costae not visible; veins not readily visible; abaxial blade scales sparse, reddish brown, lanceolate, serrulate, 0.5–0.8 mm long; sori round, at maturity exceeding the pinnae in width, peltate soral scales ovate-lanceolate, 0.1–0.3 mm long, centers dark brown-black, margins pale, fimbriate.A
Ejemplar revisado
Chis (Palacios-Rios 2804, UC). Hgo (Gimate L. 838, ARIZ, LL). Oax (Mexia 9189, ARIZ, LL, UC, US). Pue (Rzedowski 29975, 32437, ENCB; Sharp 441201, US). Qro (Díaz B. & Carranza 6521, IEB). SLP (Alcorn 1802, TEX). Ver (Faden et al. 76/101, UC; Ventura A. 5071, LL).A
Elevación
50 – 1500 mA
Ecología y Hábitat
On rock ledges in mesic woods.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species appears superficially like a Polypodium in its pinnate to pinnate-pinnatifid fronds, but we place it in Pleopeltis on the basis of its caducous peltate paraphyses. The species is distinct in its divided blades and thread-like rhizomes.
Blatchley s.n. (US), from Mt. Orizaba (Veracruz), is a mixed collection of P. fallax and a possible hybrid involving that species. The putative hybrid has lobed blades, somewhat similar to those of P. X sordidula (see under P. astrolepis), but the abaxial surfaces have more numerous, darker scales.A
Blatchley s.n. (US), from Mt. Orizaba (Veracruz), is a mixed collection of P. fallax and a possible hybrid involving that species. The putative hybrid has lobed blades, somewhat similar to those of P. X sordidula (see under P. astrolepis), but the abaxial surfaces have more numerous, darker scales.A