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 very long-creeping, ca. 3 mm diam.; rhizome scales ovate, pale brown, black at peltate attachment, mostly 3-4 mm long, entire, somewhat deciduous, leaving a mostly naked rhizome; phyllopodia distinct, 1.5-3 cm long; fronds 2-4 cm apart, to 38 cm long, 2.5-3.5 cm wide; stipe 1/3-½ the frond length, with scattered ovate scales of the rhizome and minute black appressed stellate hairs; blade lanceolate to narrowly elliptic, coriaceous, apex acute, base broadly cuneate; veins obscure, free, simple or once-forked, ca. 1 mm apart, running at ca. 70° angle; hydathodes lacking; blade surfaces nearly glabrous with minute stellate hairs and a few broader scales on the midvein, especially on the lower surface; fertile fronds slightly to much longer than the sterile fronds, the stipe longer (½-2/3 the length) and the blade slightly narrower, scales lacking; spores with low slender crests.
Species Description - Rhizome very long-creeping, ca. 3 mm diam.; rhizome scales ovate, pale brown, black at peltate attachment, mostly 3-4 mm long, entire, somewhat deciduous, leaving a mostly naked rhizome; phyllopodia distinct, 1.5-3 cm long; fronds 2-4 cm apart, to 38 cm long, 2.5-3.5 cm wide; stipe 1/3-½ the frond length, with scattered ovate scales of the rhizome and minute black appressed stellate hairs; blade lanceolate to narrowly elliptic, coriaceous, apex acute, base broadly cuneate; veins obscure, free, simple or once-forked, ca. 1 mm apart, running at ca. 70° angle; hydathodes lacking; blade surfaces nearly glabrous with minute stellate hairs and a few broader scales on the midvein, especially on the lower surface; fertile fronds slightly to much longer than the sterile fronds, the stipe longer (½-2/3 the length) and the blade slightly narrower, scales lacking; spores with low slender crests.
Discussion:
Type. Mexico. Oaxaca: Dist. Mixe, SE shoulder of Cerro Zempoaltépetl, rich, wet pine-oak cloud forest below Patio de Arena, 8200' [2500 m], 22 Sep 1970, Mickel 4908 (NY!; isotypes MEXU!, UC!). This species is close to E. lingua (Raddi) Brackenridge of South America but in that species the blade is more slender and the rhizome scales are not bicolorous to black. Elaphoglossum mcvaughii Mickel is of the same alliance but has somewhat bicolorous rhizome scales and a more western range.
Type. Mexico. Oaxaca: Dist. Mixe, SE shoulder of Cerro Zempoaltépetl, rich, wet pine-oak cloud forest below Patio de Arena, 8200' [2500 m], 22 Sep 1970, Mickel 4908 (NY!; isotypes MEXU!, UC!). This species is close to E. lingua (Raddi) Brackenridge of South America but in that species the blade is more slender and the rhizome scales are not bicolorous to black. Elaphoglossum mcvaughii Mickel is of the same alliance but has somewhat bicolorous rhizome scales and a more western range.
Distribution:
Mexico North America| Oaxaca Mexico North America|
Mexico North America| Oaxaca Mexico North America|