Monographs Details:
Authority:
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Family:
Dryopteridaceae
Dryopteridaceae
Description:
Species Description - Rhizomes moderately creeping, 2-4 mm diam.; rhizome scales deltate-lanceolate, lustrous brown, ca. 2 mm long, entire or with a few weak short hairs, somewhat deciduous, leaving partially naked rhizomes; fronds somewhat spaced, to 30 x 1-2 cm; phyllopodia distinct, usually 1-1.5 cm long; stipes 1/4-1/2 the frond length, naked or with a few lanceolate scales proximally; blades narrowly elliptic, coriaceous, bases narrowly cuneate, apices acute to acuminate; veins obscure, free, simple or once-forked, ca. 1 mm apart, at ca. 70º angle to costa; hydathodes absent; blade surfaces glabrous or with minute, black, stellate trichomidia, especially on the abaxial surfaces; fertile fronds slightly longer than the sterile fronds, the stipes longer (1/2-3/4 the frond length) and the blades slightly narrower, intersporangial scales absent.
Species Description - Rhizomes moderately creeping, 2-4 mm diam.; rhizome scales deltate-lanceolate, lustrous brown, ca. 2 mm long, entire or with a few weak short hairs, somewhat deciduous, leaving partially naked rhizomes; fronds somewhat spaced, to 30 x 1-2 cm; phyllopodia distinct, usually 1-1.5 cm long; stipes 1/4-1/2 the frond length, naked or with a few lanceolate scales proximally; blades narrowly elliptic, coriaceous, bases narrowly cuneate, apices acute to acuminate; veins obscure, free, simple or once-forked, ca. 1 mm apart, at ca. 70º angle to costa; hydathodes absent; blade surfaces glabrous or with minute, black, stellate trichomidia, especially on the abaxial surfaces; fertile fronds slightly longer than the sterile fronds, the stipes longer (1/2-3/4 the frond length) and the blades slightly narrower, intersporangial scales absent.
Discussion:
Type. Mexico. Oaxaca: Distrito Ixtla´n, 4 km S of Vista Hermosa, 74 km N of Ixtla´n de Jua´rez on Rte 175, Mickel 6615 (NY!; isotypes MEXU!, UC!).
This species is much like E. glabellum but with shorter phyllopodia, broader blades with minute, black, stellate scales, and fertile fronds longer than the sterile.