Cystopteris millefolia Mickel & Tejero
Descripción
Rhizomes short- to long-creeping, ca. 2 mm diam., not protruding beyond fronds; rhizome scales brown, membranous, lustrous, lanceolate, entire, ca. 1.5 mm, mixed with fine hairs; fronds 14–40 cm long, clumped; stipes 1⁄3–1⁄5 the frond length, stramineous, reddish brown and with scales to 3 mm long at the bases, mixed with hairs as on rhizomes, glabrous distally; blades lanceolate, tripinnate-pinnatifid to quadripinnate, 12–30 X 4.5–14 cm, with proximial 2–3 pinna pairs reduced; rachises glabrous or with scattered, minute, glandular hairs in adaxial grooves; pinnae 12–16 pairs, 2–8 cm long, more than two cells thick; segments linear, 1 mm wide; veins ending in small emarginations; indusia glabrous, entire.A
Ejemplar revisado
Méx (Barkley et al. 2346, LL; Barr 62-795, ARIZ; Bartholomew 2886, GH, MEXU; Beaman 2061, TEX; Flores F. 817, MEXU; Hinton 15711, TEX). Mich (Cruden 1068, GH, MICH; Hinton 13499, ARIZ, GH, LL, PH, TEX; Rzedowski 48315, MEXU). Mor (Pérez-García 766, UAMIZ, cited as Cystopteris reevesiana Lellinger by Riba et al., 1996, but the cited specimen is C. millefolia). A
Distribución
México (país) EndémicoA
Elevación
2200 – 3000 mA
Ecología y Hábitat
Wet mossy rocks in forest streams, moist banks.
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A
Tipo de vegetación
Bosque de pinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Cystopteris millefolia is one of the most distinct of the segregates in the C. fragilis complex because of its finely divided blades.A