Selaginella macrathera Weath.
Descripción
Stems prostrate or creeping, forming loose mats, radially symmetric, 0.3–0.5 mm diam., not articulate, not flagelliform, not stoloniferous, 1–2 times branched; rhizophores borne throughout stem length, filiform, ca. 0.2 mm diam.; leaves of one kind (isophyllous) throughout stem length, grayish green, linear to linearlanceolate, 2.7–5 X 0.3–0.5 mm, bases truncate, abruptly adnate to the stems, glabrous, margins green, short-ciliate proximally, denticulate distally, cilia and teeth hyaline; apices longaristate, aristae hyaline, 1.4–2.6 mm (as long as lamina length or more); strobili quadrangular, 0.5–1.1 cm long; sporophylls monomorphic; megasporangia few, scattered in ventral rows; microsporangia in two dorsal rows and scattered in ventral rows; megaspores deep yellow, reticulate or reticulate on proximal face and rugose to smooth on distal face, 300–360 µm diam.; microspores orange, 40–50 µm diam.A
Forma de vida
Epipétrica, TerrestreA
Ejemplar revisado
Chih (Martin et al. s.n., ARIZ). Son (Sanders et al. 13502, UC).A
Distribución
México (país) EndémicoA
Elevación
1100 – 1400 mA
Ecología y Hábitat
On cliffs.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is characterized by having the longest aristae, as long as the laminae or longer, of all isophyllous species treated here.A