Asplenium radicans L.
Descripción
Roots wiry, fibrous, not proliferous; rhizomes erect; rhizome scales black, clathrate, 2–3 X 0.8 mm, entire; fronds clumped, 30–75 cm long; stipes castaneous to atropurpureous, lustrous, 6–22 cm X 1–2 mm, 1⁄5–2⁄5 of frond length, glabrous, not winged; blades thick-herbaceous, 15–45 X 7–15 cm, lanceolate, deeply pinnate-pinnatifid to 2-pinnate, not reduced proximally, apices flagelliform, proliferous at tips; rachises castaneous, lustrous, glabrous, with brownish wings 0.1 mm wide; pinnae lanceolate, 12–25 pairs, 4–8 X 1.5–2.5 cm, sessile or stalked to 1 mm, pinnate, pinnules oblong to obovate, broadly adnate to cuneate proximally, entire or nearly so, pinna apices acute; veins obscure, tips evident adaxially; indument absent on blades; sori 6–8 pairs on distal 1⁄2 of pinnae, 1–3 pairs per segment (pinnule) in proximal half of pinnate segments; indusia 4–5 mm X 0.3–0.5 mm, margins suberose; spores reniform; 2n=144, 216, 288 (Jam, A. radicans s.l.).
A
A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 31318, DS, 32427, DS, MEXU; Ghiesbreght 427, YU; Gittins 4183, NY). Gro (Lorea 2997, FCME). Oax (Hallberg 1553, NY; Mickel 945, NY, UC; Wendt et al. 4643, CHAPA, NY). Pue (Riba s.n., MEXU). Ver (Ramírez 654, XAL).A
Elevación
900–1900 mA
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Asplenium radicans is here circumscribed in a narrow sense, comprising only those members of the A. radicans complex that are deeply pinnate-pinnatifid to barely 2-pinnate. To include the entire complex in a single species, from the 1-pinnate A. cirrhatum and A. yelagagense (which see) to 2-pinnate-pinnatifid A. flabellulatum, to fully 3-pinnate A. uniseriale (which see) as varieties of A. radicans (as done by Morton & Lellinger, 1966; Stolze, 1981, Tryon & Stolze, 1993) obscures significant morphological, ecological, and geographical differences between the taxa and gives the impression of having resolved the difficult taxonomic questions raised in this group. Generally, the different species in this group do not grow together. Admittedly, the A. radicans group of terrestrial, flagelliform-tipped species with dark lustrous stipes and rachises is in need of modern biosystematic work.
Specimens cited as A. radicans from Veracruz by Palacios-Rios (1992) are A. flabellulatum.
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Specimens cited as A. radicans from Veracruz by Palacios-Rios (1992) are A. flabellulatum.
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