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 long-creeping, 4–6 mm diam.; rhizome scales ovate to ovate-lanceolate, dull tan, concolorous, mostly 5–7 mm long, entire or each with an occasional tooth or short marginal hair, scales dense, not deciduous; fronds 5–17 mm apart, 25–34(–47) x 2.6–4.3 cm; phyllopodia distinct, 2–3 cm long; stipes 1/5–2/5 (–1/2) of the frond length, with scattered ovate to ovate-lanceolate scales, tan, occasionally with dark sclerotic tips, entire to irregularly toothed; blades narrowly elliptic, apices acute, bases broadly cuneate, coriaceous; veins obscure, free, simple or onceforked, ca. 1 mm apart, at 70–75º angle to costa; hydathodes absent; blade surfaces glabrous or subglabrous with sparse, minute, stellate trichomidia (0.1 mm), these sometimes reduced to mere dots; costae with occasional broader scales; fertile fronds equal to or slightly longer that the sterile, the stipes 2/5–2/3 of the fertile frond length, the blades similar in shape to those of sterile fronds, but narrower (1.8–2 cm wide), scales absent on abaxial blade surfaces.
Species Description - Rhizomes long-creeping, 4–6 mm diam.; rhizome scales ovate to ovate-lanceolate, dull tan, concolorous, mostly 5–7 mm long, entire or each with an occasional tooth or short marginal hair, scales dense, not deciduous; fronds 5–17 mm apart, 25–34(–47) x 2.6–4.3 cm; phyllopodia distinct, 2–3 cm long; stipes 1/5–2/5 (–1/2) of the frond length, with scattered ovate to ovate-lanceolate scales, tan, occasionally with dark sclerotic tips, entire to irregularly toothed; blades narrowly elliptic, apices acute, bases broadly cuneate, coriaceous; veins obscure, free, simple or onceforked, ca. 1 mm apart, at 70–75º angle to costa; hydathodes absent; blade surfaces glabrous or subglabrous with sparse, minute, stellate trichomidia (0.1 mm), these sometimes reduced to mere dots; costae with occasional broader scales; fertile fronds equal to or slightly longer that the sterile, the stipes 2/5–2/3 of the fertile frond length, the blades similar in shape to those of sterile fronds, but narrower (1.8–2 cm wide), scales absent on abaxial blade surfaces.
Discussion:
Type. Mexico. Guerrero: ±2 km al NE del Campamento El Gallo, estribacio´nes suroccidentales del Cerro Teotepec, Rzedowski & McVaugh 174 (NY!; isotypes ENCB!, MICH!).
Elaphoglossum clewellianum Mickel, Mem. New York Bot. Gard. 46: 172. 1988. Type. Mexico. Oaxaca: Distrito Centro, N slope of Cerro San Felipe, Mickel 4034 (NY!; isotypes ENCB!, US!).
The creeping rhizomes are similar to those of E. seminudum and E. mcvaughii, but the latter has narrower blades and bicolorous rhizome scales. Elaphoglossum dissitifrons is superficially most like E. sartorii in frond size and shape but is more closely related to E. affine, as evidenced by the broader, ovate rhizome scales.
Distribution:
Mexico North America|
Mexico North America|