Selaginella carnerosana T.Reeves
Descripción
Stems prostrate, forming dense mats, dorsiventral, 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, margins green, ciliate, cilia hyaline, apices long-aristate or broadly acute if aristae break off, aristae usually persistent, twisted; upperside leaves lanceolate, 0.7–2.3 X 0.3–0.5 mm, bases truncate, abruptly adnate to the stems, glabrous, aristae 0.2–0.5 mm long; underside leaves linearoblong to oblong-elliptic, 1.6–2.6 X 0.4–0.7 mm, bases abruptly adnate to decurrent, glabrous, aristae 0.5–0.7 mm long; strobili quadrangular, 3–6 mm; sporophylls monomorphic; megasporangia few, basal on ventral side; microsporangia in two dorsal rows and scattered on ventral rows; megaspores yellow, reticulate, 320–360 µm diam.; microspores tan-orange.A
Forma de vida
Epipétrica.A
Ejemplar revisado
Known only from the type collection: Coah (Pringle S. N., NY).A
Distribución
México (país) EndémicoA
Elevación
300 mA
Ecología y Hábitat
On faces of limestones.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella carnerosana is distinct by the long, persistent (at least near stem apices), twisted aristae of leaves and sporophylls.A