Monographs Details:
Authority:
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Family:
Dryopteridaceae
Dryopteridaceae
Description:
Species Description - Rhizome moderately creeping, ca. 2 mm diam.; rhizome scales dense to sparse, ovate-lanceolate, tan with varying degrees of dark, lustrous, sclerotic streaking, 2-4 mm long (deeply cordate, appearing peltate), entire or with occasional small, irregular teeth; phyllopodia distinct; fronds 2-10 mm apart, (4-)9-22(-41) cm long, 0.9-2.6 cm wide; stipe 1/6-1/3 the frond length, with sparse tan ovate scales, at least at the base; blade narrowly elliptic, coriaceous, apex acuminate, base cuneate; veins obscure, free, simple or once-forked, ca. 1 mm apart, at 60-70° angle; hydathodes lacking; upper blade surface essentially glabrous; lower surface with linear scales with hastate or stellate bases, to deeply stellate; fertile fronds similar to the sterile in blade size and shape but usually somewhat longer; scales lacking on lower surface; spores with low ridges.
Species Description - Rhizome moderately creeping, ca. 2 mm diam.; rhizome scales dense to sparse, ovate-lanceolate, tan with varying degrees of dark, lustrous, sclerotic streaking, 2-4 mm long (deeply cordate, appearing peltate), entire or with occasional small, irregular teeth; phyllopodia distinct; fronds 2-10 mm apart, (4-)9-22(-41) cm long, 0.9-2.6 cm wide; stipe 1/6-1/3 the frond length, with sparse tan ovate scales, at least at the base; blade narrowly elliptic, coriaceous, apex acuminate, base cuneate; veins obscure, free, simple or once-forked, ca. 1 mm apart, at 60-70° angle; hydathodes lacking; upper blade surface essentially glabrous; lower surface with linear scales with hastate or stellate bases, to deeply stellate; fertile fronds similar to the sterile in blade size and shape but usually somewhat longer; scales lacking on lower surface; spores with low ridges.
Discussion:
Type. Mexico. Oaxaca: Dist. Ixtlán, trail from San Pedro Nolasco to the Llano Verde, 6000-6800' [1830-2070 m], 4 Oct 1969, Mickel 3739 (NY). This species closely resembles Elaphoglossum affine in the streaking of the rhizome scales and the general size and blade shape but is noticeably more scaly, and the apex is distinctly acuminate. The type collection consists of plants about the size of specimens of E. affine (4-22 cm long), but Mickel 3735 from the same locality has longer fronds (28-41 cm).
Type. Mexico. Oaxaca: Dist. Ixtlán, trail from San Pedro Nolasco to the Llano Verde, 6000-6800' [1830-2070 m], 4 Oct 1969, Mickel 3739 (NY). This species closely resembles Elaphoglossum affine in the streaking of the rhizome scales and the general size and blade shape but is noticeably more scaly, and the apex is distinctly acuminate. The type collection consists of plants about the size of specimens of E. affine (4-22 cm long), but Mickel 3735 from the same locality has longer fronds (28-41 cm).
Distribution:
Mexico North America|
Mexico North America|