Polypodium eatonii Baker
Descripción
Rhizomes creeping, 4–5 mm diam.; rhizome scales whitish with orange bases, lanceolate-acuminate, subentire with sparse minute teeth, spreading, 5–7 X 1 mm at bases; fronds 24–34 cm long, distant; stipes 1⁄4–2⁄5 the frond length, stramineous to tan, glabrous; blades pinnatisect, deltate to lanceolate, 10–13 cm wide; pinnae 4–6(–8) pairs, 5–8 X 1.5–2 cm, oblong, apices broadly acute, proximal pinnae and occasionally the next with basiscopic bases rounded to cordate, usually clasping the rachises; margins entire; abaxial and adaxial surfaces glabrous; venation netted, forming 2 or more rows of areoles between costae and margins; sori round, medial, in one row on each side of costae; sporangia glabrous; 2n=74 (Ver).A
Forma de vida
EpífitaA
Ejemplar revisado
Chis (Breedlove 6210, DS, US; Münch 61, DS; Thorne & Lathrop 41060, DS). Pue (Tenorio L. 12600, IEB). Ver (Ventura A. 7110, 8918, CHAPA, ENCB, NY, 16699, IEB).A
Distribución
México (país) EndémicoA
Elevación
1200 – 1700 mA
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Some Chiapas and Veracruz specimens do not have the cordate-clasping segment bases mentioned by Maxon but otherwise agree with his characterization. See P. arcanum for further discussion.A