Anemia semihirsuta Mickel
Descripción
Rhizomes horizontal, compact, short-creeping, 4–7 mm diam.; rhizome hairs orange; fronds erect, 10–30 cm tall; stipes 6–18 cm long, ca. 1⁄2 the frond length, ca. 1 mm diam., stramineous, hirsute; blades narrowly oblong or narrowly deltate, 1-pinnate, the proximal 1–5 pairs of pinnae incised, chartaceous, hirsute; pinnae 5–10 pairs, opposite to subopposite, broadly oblong, cuneate at bases, often excavate basiscopically on lower margin, apices obtuse, margins minutely denticulate; veins mostly free, with 0–2(–6) anastomoses per pinna; fertile pinnae approximate to the sterile pinnae, usually somewhat surpassing the sterile blades in height; spores with rugulose, narrow, distant ridges; 2n=228 (Oax).A
Ejemplar revisado
Chis (Breedlove 22268, 32536, DS; Matuda 4802, LL, MEXU, NY). Oax (Mickel 887, 1120, 1299, 4713, 4758, NY). Ver (Calzada et al. 10180, XAL; Calzada & Vázquez B. 10236, XAL).
A
A
Elevación
900–1600 mA
Ecología y Hábitat
Uncommon on disturbed, partially shaded banks in mesic forests.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
This species is apparently of hybrid origin between A. hirsuta and a diploid race of A. phyllitidis. See Mickel (1982) for details. It may well be a triploid apomict rather than a sexual hexaploid, but at this time we are uncertain. The backcross of A. semihirsuta to A. hirsuta shows 2n=ca. 76II and 38I at meiosis (Oax). A collection with narrower pinnae, but with well formed spores, is probably of this species (Chis: Matuda 17901, DS, F, MEXU). A Chiapas collection (Matuda 1767, MICH, NY) that has malformed spores and casually anastomosing veins differs from typical A. semihirsuta in having larger pinnae and resembles A. xdidicusana (see discussion under A. phyllitidis).A