Nephrolepis pendula J.Sm.
Descripción
Rhizomes short-creeping to suberect, well developed, lacking tubers; rhizome scales concolorous, linear, castaneous, 2–3 X 0.5 mm, margins whitish-ciliate; stipes brown, lustrous, glabrous or glabrescent but with a few persistent scales at bases; blades often pendent, 30–100+ X 3.5–7 cm; costae brownish, glabrous except for matted, linear scales at pinna bases; pinnae sessile to shortstalked, bases unequally lobed with basiscopic lobe small and overlapping rachis, acroscopic lobe larger, acute to obtuse, overlapping rachis, pinna apices usually obtuse, margins crenate; indument on both surfaces generally absent; hydathodes often limedotted on adaxial blade surfaces; indusia tan, reniform to semicircular, 1.3–1.5 X 0.2–0.3 mm, attached along broad, shallow sinuses, mostly opening toward pinna apices; 2n=ca. 82 (Galapagos).A
Forma de vida
Epífita, (raramente) TerrestreA
Ejemplar revisado
Chis (Breedlove 34481, DS, MO, NY, 48362, CAS, ENCB; Martínez S. 15505, MEXU, XAL). Oax (Hernández G. 719, CAS, MO, NY; Williams 9534, GH). Tab (Matuda 3332, MEXU, NY, US; Zamudio 327, ENCB, IEB). Ver (Brigada Dorantes 2733, MEXU, UAMIZ, XAL, 2768, MEXU, MO, UAMIZ, UC; Brigada Vázquez 699, ENCB, MEXU, MO, XAL).A
Elevación
150 – 550(– 1500) mA
Tipo de vegetación
Bosque de pino-encino, Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is sometimes treated as a synonym of N. cordifolia, e.g., by R. Tryon (1964: 230), Stolze (1981: 311), and R. Tryon and Stolze (1993: 52), but others regard N. pendula as distinct (e.g., Nauman in Davidse et al., 1995: 288). The two species seem amply different to us, with N. pendula differing in the moderately to densely scaly petioles (proximal third or more), scalier rachises adaxially, glabrous pinnae abaxially, nonoverlapping pinnae, rounded pinna tips, more prominent hydathodes (with lime dots) adaxially, and lack of subterranean tubers. Moreover, the two have distinctly different ranges, with N. cordifolia being essentially absent or only sparingly naturalized in Mexico, Central America, and South America, N. pendula being common in these areas.A