Selaginella flexuosa Spring
Descripción
Stems prostrate, stramineous to pale green, ca. 0.6–0.8 mm diam., not articulate, not flagelliform, not stoloniferous; rhizophores borne throughout stem length, stout, straight, (0.3–)0.5–0.8 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves on main stem obliquely oblong to subovate, 2–3 mm long, bases rounded, margins minutely denticulate to entire, apices acute, green above, silvery below, sometimes with short idioblasts below, wrinkled on upper surface; median leaves ovate, with prominent midrib and white border, striate to weakly verruculose, exauriculate, margins denticulate to entire, apices long-aristate, aristae 0.8 mm long, 1⁄3 of lamina length; axillary leaves ovate to lanceolate, exauriculate, denticulate at bases; strobili quadrangular, 3–15 mm long; sporophylls monomorphic and of two colors, dorsal two rows green, ventral two rows hyaline, ascending; megasporangia in two ventral rows; microsporangia in two dorsal rows, smaller strobili often completely microsporangiate; megaspores white with faint markings, 250–350 µm diam.; microspores light orange, with slender, often capitate papillae.A
Forma de vida
TerrestreA
Ejemplar revisado
Oax (McAlpin 1023, F; Mexia 9270a, UC, US; Mickel 946, MICH, US, 1063, MICH, NY, UC, US, 1445, MICH, NY, US; Rzedowski 30661, NY; Schultes & Reko 677, US). Pue (García 72, ENCB, MICH, NY; Martin 4676, US). Ver (Lira 196, ENCB).A
Elevación
200 – 1900 mA
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella corrugis, S. flexuosa, and S. subrugosa are characterized by their non-stoloniferous, non-flagellate, prostrate habit, stilt-like rhizophores, denticulate leaves, and narrow strobili.
Selaginella flexuosa differs from S. corrugis by the long-aristate white-bordered median leaves (very short-cuspidate with narrow white border in S. corrugis), larger lateral leaves 2–3 mm long, each with a minutely denticulate apex and base (leaves 1–1.2 mm long, denticulate in S. corrugis). It has been collected in Oaxaca with S. corrugis and S. subrugosa.
A
Selaginella flexuosa differs from S. corrugis by the long-aristate white-bordered median leaves (very short-cuspidate with narrow white border in S. corrugis), larger lateral leaves 2–3 mm long, each with a minutely denticulate apex and base (leaves 1–1.2 mm long, denticulate in S. corrugis). It has been collected in Oaxaca with S. corrugis and S. subrugosa.
A
Bibliografía
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]