Elaphoglossum potosianum Christ
Descripción
Rhizomes short-creeping, 2–3 mm diam.; rhizome scales lanceolate to linear-lanceolate, orange, occasionally black with age (especially in Hidalgo), ca. 3 mm long, apices attenuate, subentire with occasional short teeth; fronds approximate, 12–21 X 1.4–2.2 cm; phyllopodia distinct, 3–4 mm; stipes 1⁄3–1⁄2 the sterile frond length, with scales ca. 1 mm, scattered, mostly appressed, stellate, proximally with a few lanceolate scales like those of rhizomes; blades narrowly elliptic, chartaceous, bases narrowly to broadly cuneate, apices acute to acuminate; veins free, simple or once-forked, ca. 1 mm apart, at 60–70° angle to costa; hydathodes absent; blade scales adaxially scattered, substellate, mostly ca. 0.5 mm, abaxially the blades with simple to 3-armed trichomidia subtended or not by resinous dots; fertile fronds surpassing the sterile in length, stipes ca. 2⁄3 the frond length, with a few lanceolate scales on abaxial costae.A
Forma de vida
TerrestreA
Ejemplar revisado
DF (Schaffner 93, NY). Gto (Correll &Correll 2882, LL). Hgo (Knobloch 682, MSC; Orcutt 885, DS). NL (Dorr 2597, TEX; Hinton 22119, ARIZ, TEX, 22679, NY). SLP (Schaffner 92, NY). Tam (González Medrano 17496, MEXU).A
Distribución
México (país) EndémicoA
Elevación
2000 – 2540 mA
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This species is similar to E. petiolatum except: abaxial blade indument of simple to 3-armed stellate trichomidia with or without small resinous subtending dots (vs. large dots and/or substellate scales), and rhizome scales usually orange, occasionally black with age (vs. always black). Elaphoglossum potosianum has been mistakenly identified as E. muelleri because of the orange rhizome scales.A