Hymenasplenium hoffmannii (Hieron.) L.Regalado & Prada
Descripción
Roots thin, fibrous, not proliferous; rhizomes short-creeping to erect; rhizome scales red-brown, clathrate, lumina not occluded, 1.5–2 X 0.3–0.5 mm, entire; fronds few, 2–5 per plant, 1–2 mm distant, 4–23 cm long; stipes green, dull, 3–9 cm X 0.5–1 mm, 1⁄4–1⁄3 of frond length, with rare red-brown, clathrate scales ca. 1.5 X 0.3 mm long, adaxially with green to gray-green wings ca. 0.3 mm wide; blades membranaceous, oblong-deltate, 1-pinnate, 8–15 X 3–8 cm, apices pinnatifid, not proliferous; rachises greenish, dull, glabrous, with lateral gray-green wings ca. 0.3–0.5 mm wide; pinnae oblong, 4–10 pairs, 2–4 X 1–1.5 cm, sessile, proximal pair often slightly reduced and deflexed, basiscopically excavate ca. 1⁄2 the length, not auriculate, apices acute to usually obtuse, margins deeply crenate-serrate, sinuses 1–2 mm deep; veins simple to 1-forked, readily visible on both sides of blades, tips obscure; indument absent, blades essentially glabrous; sori 3–10 pairs per pinna, occasionally back-to-back on the same vein, on both sides of midveins; indusia 1–4 X 0.5–0.8 mm, margins erose; spores reniform, 64 per sporangium (Murakami & Moran, 1993).A
Forma de vida
Epipétrica.A
Ejemplar revisado
(Related to the synonym Asplenium hoffmannii) Chis (Breedlove 29938, DS, 33893, DS, MEXU, MO, NY, 42851, DS, MO). Gro (Lorea 4917, FCME). Jal (Díaz L. 21291, NY). Nay (McVaugh 19198, CAS, IEB, MEXU, NY). Oax (Hernández G. 2021, CAS, CHAPA, MEXU, MO, NY; Mickel 7411, NY, UC). QR (Torres et al. 75, MEXU). Ver (Dorantes 2722, XAL).A
Elevación
150 – 500 mA
Ecología y Hábitat
On muddy banks and rocks by streams in wet woods.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Asplenium hoffmannii differs from A. laetum in having fewer leaves per plant, membranaceous blades, fewer pinna pairs, and more incised pinnae. It is said to hybridize with that species to produce A. incisoserratum (see A. laetum for discussion).A