Selaginella mutica D.C.Eaton
Descripción
Stems long- to short-creeping, forming loose mats, radially symmetric, 6–20 cm long, 0.2–0.3 mm diam., not articulate, not flagelliform, not stoloniferous, 1–2 times branched; rhizophores borne throughout stem length, filiform, 0.1–0.2 mm diam.; leaves of one kind (isophyllous) throughout stem length, tightly appressed, linear-lanceolate to lanceolate, 1–1.5 X 0.3–0.5 mm, bases rounded, glabrous, green, long-ciliate, denticulate to entire distally, cilia and teeth hyaline, apices blunt or acuminate to mucronate, mucro ca. 0.05 mm; strobili quadrangular, 3–5 mm long; sporophylls monomorphic; megasporangia few, scattered in ventral rows; microsporangia in two dorsal rows and scattered in ventral rows; megaspores yellow, rugose on proximal face, smooth on distal face, 300–320 µm diam.; microspores orange.A
Forma de vida
Epipétrica, TerrestreA
Ejemplar revisado
Chih (Henrickson 12873, LL; Knobloch 2110, GH, MSC).A
Elevación
1800 mA
Ecología y Hábitat
On limestone rocks.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella mutica var. mutica is a very distinct taxon characterized by its tightly appressed, ciliate, mucronate leaves. The tightly appressed leaves give the stems the appearance of a woven rope. Mexican material belongs to var. mutica; var. limitánea Weath., with short-ciliate, long-aristate leaves, occurs in southwestern United States (Arizona to Texas).A