Selaginella flagellata Spring
Descripción
Stems suberect to erect, stramineous, 6–15 cm long, 0.2–1 mm diam., not articulate, frequently with flagelliform stem apices, stoloniferous or not, 2–4 times branched; rhizophores restricted to proximal 1⁄3 or throughout stems on flagelliform plants, filiform to moderately stout, 0.1–0.5 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves broadly ovate to ovate-oblong, 2–5 X 1–3 mm, bases rounded to subcordate, acroscopic bases strongly overlapping stems, basiscopic bases rounded, not overlapping stems, margins narrowly hyaline or pale green, denticulate, apices acute, both surfaces glabrous, without idioblasts; median leaves elliptic or broadly ovate-elliptic, 1–2 X 0.5–1.7 mm, bases subcordate, margins hyaline, denticulate, apices long-acuminate to long-aristate, aristae 1⁄2 the length to nearly as long as the lamina, 0.4–1 mm long, both surfaces glabrous, without idioblasts; axillary leaves similar to lateral leaves, bases rounded; strobili lax and flattened, dorsiventral, 0.2–5 cm long; sporophylls dimorphic, the dorsal ones green, spreading, the ventral ones hyaline to pale green, ascending; megasporangia in two ventral rows or frequently absent; microsporangia in two dorsal rows, frequently in the distal region of ventral side of strobili, or strobili wholly microsporangiate; megaspores snowto bone-white, or cream, with an equatorial flange, rugosegranulate to granulate-reticulate, 230–240 µm diam.; microspores tan, the proximal face slightly rugose to smooth, the distal face baculate to clavate, 20–23 µm diam.A
Forma de vida
Terrestre, Epipétrica, EpífitaA
Ejemplar revisado
Chis (Breedlove 31585, 33958, DS, 37789, DS, ENCB 38478, DS; Fisher 35398, ARIZ, US; Martínez 13643, ENCB, MO; Münch 192, DS). Col (Gadow & Gadow s.n., BM). Oax (Mickel 4193, 5133A, NY, UC).A
Elevación
120 – 1000 mA
Ecología y Hábitat
In lowland to montane forests, on open to shady roadside or stream banks, or forested slopes.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC