Selaginella viridissima Weath.
Descripción
Stems forming clumps or mounds, radially symmetric, underground (rhizomatous) and aerial, not readily fragmenting, irregularly forked, rhizomatous and aerial stems often with 1 branch arrested, bud-like, tips straight, aerial stems mainly erect, seldom merely ascending, with bud-like arrested branches throughout stem length; rhizophores restricted to rhizomatous stems and proximal 1⁄4 of aerial stems, 0.2–0.3 mm diam.; leaves of one kind (isophyllous) throughout stem length; rhizomatous stem leaves loosely appressed, straight, scale-like, decurrent or long-decurrent; aerial stem leaves appressed, green, linearlanceolate to narrowly lanceolate, 1.8–2.1 X 0.5–0.6 mm, bases cuneate and decurrent to slightly rounded and adnate, glabrous, margins denticulate to very short-ciliate, apices acute to obtuse; strobili quadrangular, 0.5–1.2(–2.5) cm long; sporophylls monomorphic; megasporangia and microsporangia each in two rows; megaspores pale orange, rugose, 400–500 µm; microspores orange.A
Forma de vida
Epipétrica.A
Ejemplar revisado
Coah (Cowan & Rodríguez 3631, TEX; Johnston 8683, F, GH, LL, TEX; Wendt et al. 1949, TEX; Wendt & Kiskind 1616E, TEX).A
Elevación
1300 – 1850 mA
Ecología y Hábitat
On shaded cliffs, slopes, rock crevices, and igneous rocks.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella viridissima is distinct from S. bigelovii and S. rupincola in having its leaves acute to obtuse (vs. aristate), the leaf margins denticulate (vs. ciliate), and the bases of aerial stem leaves and rhizome scale-like leaves decurrent or long-decurrent (vs. abruptly adnate).A