Selaginella orizabensis Hieron.
Descripción
Stems suberect, stramineous, 11 cm long, 0.2–0.5 mm diam., not articulate, not flagelliform, stoloniferous, 2–3 times branched; rhizophores in proximal 1⁄4 of stems, filiform, 0.1–0.2 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves broadly-ovate to ovate-oblong, (1.4–)1.7–2.3 X (0.7–)0.9–1.6 mm, bases rounded, strongly overlapping stems acroscopically, margins hyaline, long-ciliate to denticulate or entire acroscopically, entire or denticulate basiscopically, apices acute to obtuse, both surfaces glabrous, without idioblasts; median leaves ovate to ovate-lanceolate, 0.9–1.2 X 0.5–0.7 mm, bases subcordate, margins hyaline, long- to short-ciliate, apices long-acuminate to aristate, aristae 0.2–0.5 mm, both surfaces glabrous, without idioblasts; axillary leaves similar to lateral leaves or more ovate-lanceolate, exauriculate; strobili quadrangular to slightly dorsiventral, 2–2.6 mm long; sporophylls monomorphic; megasporangia in two ventral rows or only two at base; microsporangia occupying most of strobilus; megaspores yellow, with a low equatorial flange, reticulate to rugose-reticulate, 300–350 µm diam.; microspores deep orange.A
Forma de vida
TerrestreA
Ejemplar revisado
Ver (only an isosyntype Müller 268, NY).A
Distribución
México (país) EndémicoA
Elevación
data unavailableA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella orizabensis is a poorly known species, apparently closely related to S. mixteca. They can be separated by the characters given in the key.A