Selaginella huehuetenangensis Hieron.
Descripción
Stems creeping, stramineous, to 35 cm long, 0.5–0.8 mm diam., not articulate, not flagelliform, not stoloniferous, 2–4 times branched; rhizophores borne throughout stem length, 0.2–0.3 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves ovate-oblong, 1.7–2.2 X 0.8–1.2 mm, bases rounded, strongly overlapping stems acroscopically, margins hyaline, long-ciliate proximally, denticulate or entire distally, apices acute, upper surfaces corrugate with papilla-like projections, without idioblasts, lower surfaces glabrous, with obscure idioblasts; median leaves ovate-lanceolate or broadly ovate, 0.8–1.1 X 0.5–0.7 mm, bases subcordate, outer bases with ciliate auricles, margins broadly hyaline, long-ciliate, apices longaristate, aristae 0.3–0.6 mm long, both surfaces glabrous, upper surfaces corrugate with papilla-like projections, without idioblasts; axillary leaves ovate-lanceolate, bases rounded, margins long-ciliate, apices acute; strobili quadrangular, 0.3–2 mm long; sporophylls monomorphic; megasporangia few at base of ventral rows, intermixed with the microsporangia; microsporangia occupying most of strobilus; megaspores white, rugose, without an equatorial flange, 250–300 µm; microspores orange.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 33161, DS, MICH, NY, 49201, 49985, ENCB; Martínez 6939, ENCB, NY, 7026, CAS, ENCB, 8147, 14884, NY; Matuda 2782, US, 3702, F, MICH, US; Sohns 1612, NY, US ).A
Elevación
160 – 400 mA
Ecología y Hábitat
On talus slopes or riverbanks.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella huehuetenangensis is part of a species group that also includes S. corrugis, S. flexuosa, S. guatemalensis, S. subrugosa, S. barnebyana, and S. idiospora. Selaginella denudata (Willd.) Spring and S. krugii Hieron., from the West Indies, also belong to this group, which is in need of revision.
In Mexico S. huehuetenangensis seems to be restricted to low elevations. It can be distinguished chiefly by its long-aristate median leaves, with the aristae hyaline, 1⁄2 or more the length of the lamina, and by broadly hyaline leaf margins. Because of the long-aristate median leaves, S. huehuetenangensis can also be confused with S. barnebyana (which see for comparison).
A
In Mexico S. huehuetenangensis seems to be restricted to low elevations. It can be distinguished chiefly by its long-aristate median leaves, with the aristae hyaline, 1⁄2 or more the length of the lamina, and by broadly hyaline leaf margins. Because of the long-aristate median leaves, S. huehuetenangensis can also be confused with S. barnebyana (which see for comparison).
A