Selaginella wrightii Hieron.
Descripción
Stems prostrate, forming loose to dense mats, dorsiventral, branch tips curving upward; rhizophores borne throughout stem length, 0.3–0.4 mm diam.; leaves of one kind (isophyllous) throughout stem length; leaves crowded, slightly dimorphic, margins ciliate, cilia hyaline, apices aristate, aristae yellowish, 0.2–0.5 mm, often breaking off, usually more persistent on underside leaves; upperside leaves linear-lanceolate, 3.3–3.9 X 0.6–0.8 mm, bases abruptly adnate, pubescent; underside leaves narrowly linear-lanceolate to falcate on marginal rows, 3.5–4.5(–5) X 0.6–0.7 mm, bases abruptly adnate or slightly decurrent, usually pubescent, sometimes glabrous; strobili quadrangular, (0.7–)1.5–2 (–2.6) cm long; sporophylls monomorphic; megasporangia few, basal, strobili nearly entirely microsporangiate; megaspores pale to bright orange, rugose, 270–380 µm diam.; microspores bright orange, 34–56 µm diam.A
Forma de vida
Epipétrica.A
Ejemplar revisado
Chih (Weber & Charette 11626, UC). Coah (Johnston 8607, CAS, MEXU, 9106, CAS, UC). Gro(Lorea 1970, F, NY). NL (Dorr et al. 2494, UC; Müller 2638, UC). Oax (Mickel 4555, NY). Pue (Smith et al. 4125, F). Qro (Díaz Barriga 3775, NY). Tam (Bartlett 10561, F; Harrison 11599, F). Zac (Lloyd & Kirkwood 20, UC).
Unverified, Doubtful, or Mistaken Reports. Hgo (Kenoyer 1053, GH, cited by R. Tryon, 1955, but not verified). SLP (Lundell 96, US, cited by R. Tryon, 1955, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Hgo (Kenoyer 1053, GH, cited by R. Tryon, 1955, but not verified). SLP (Lundell 96, US, cited by R. Tryon, 1955, but not verified).
A
Elevación
375 – 2000 mA
Ecología y Hábitat
On exposed or shaded rocks, limestone cliffs.A
Tipo de vegetación
Bosque de pino, Matorral de otro tipoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Selaginella wrightii seems to be allied to the Californian S. hansenii Hieron., from which it can be distinguished by long (vs. short) strobili, strongly tapering, lanceolate (vs. shortattenuate, ovate-deltate) sporophylls, and green (vs. usually redspotted or wholly red) leaves. Some characters, such as the dorsiventral habit, the dimorphism of the leaves, and the upturned branch tips, suggest a closer alliance of these two species to series Eremophilae than to series Sartorii as suggested by R. Tryon (1955).A