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 long-creeping, ca. 1 mm diam.; rhizome scales ovate-lanceolate, orange, ca. 3 mm long, entire; phyllopodia lacking; fronds usually 4-8 mm apart, 5-15 cm long, 0.6-1.1 cm wide; stipe ca. ¼(-½) the frond length, with orange, ovate, somewhat spreading scales, 2 mm long; blade narrowly elliptic, coriaceous, apex obtuse, base cuneate; veins obscure, free, simple or once-forked, ca. 0.8 mm apart, at ca. 60° angle; hydathodes lacking; blade surfaces glabrous or with a few ovate scales on the abaxial midvein; fertile fronds exceeding the sterile fronds, stipe ½-¾ the length, blade narrow, to 4 mm wide, scales lacking on the lower surface; spores with low, broad ridges, with abundant spicules on all surfaces.
Species Description - Rhizome long-creeping, ca. 1 mm diam.; rhizome scales ovate-lanceolate, orange, ca. 3 mm long, entire; phyllopodia lacking; fronds usually 4-8 mm apart, 5-15 cm long, 0.6-1.1 cm wide; stipe ca. ¼(-½) the frond length, with orange, ovate, somewhat spreading scales, 2 mm long; blade narrowly elliptic, coriaceous, apex obtuse, base cuneate; veins obscure, free, simple or once-forked, ca. 0.8 mm apart, at ca. 60° angle; hydathodes lacking; blade surfaces glabrous or with a few ovate scales on the abaxial midvein; fertile fronds exceeding the sterile fronds, stipe ½-¾ the length, blade narrow, to 4 mm wide, scales lacking on the lower surface; spores with low, broad ridges, with abundant spicules on all surfaces.
Discussion:
Acrostichum revolutum Liebmann, Mexic. bregn. 163 (seors. 11). 1849. Syntypes. Mexico. Oaxaca: Chi-nantla, Lobani to Petlapa, Liebmann [Pl. Mex. 2427, Fl. Mex. 4] (C! [lectotype chosen here]; isosyntype US!, frag. NY!); Cuba. Bejucal, Liebmann 2428 (C!). Acrostichum rampans Baker in Hooker & Baker, Syn. fil. 518. 1874. Elaphoglossum rampans (Baker) Christ, Neue Denkschr. Allg. Schweiz. Ges. Gesammten Naturwiss. 36: 56. 1899. Type. Cuba. Wright 3959 (K!; isotypes NY!, P!). Elaphoglossum revolutum is closely allied to E. squamipes and to Peltapteris, as evidenced by the rhizome habit, the scales, and the spores. It is distinguished from E. affine, E. tenuifolium, and small specimens of E. guatemalense by the pale, ovate, rhizome scales and the lack of phyllopodia, and from E. squamipes by the generally more elliptic blade and the much lower elevation.
Acrostichum revolutum Liebmann, Mexic. bregn. 163 (seors. 11). 1849. Syntypes. Mexico. Oaxaca: Chi-nantla, Lobani to Petlapa, Liebmann [Pl. Mex. 2427, Fl. Mex. 4] (C! [lectotype chosen here]; isosyntype US!, frag. NY!); Cuba. Bejucal, Liebmann 2428 (C!). Acrostichum rampans Baker in Hooker & Baker, Syn. fil. 518. 1874. Elaphoglossum rampans (Baker) Christ, Neue Denkschr. Allg. Schweiz. Ges. Gesammten Naturwiss. 36: 56. 1899. Type. Cuba. Wright 3959 (K!; isotypes NY!, P!). Elaphoglossum revolutum is closely allied to E. squamipes and to Peltapteris, as evidenced by the rhizome habit, the scales, and the spores. It is distinguished from E. affine, E. tenuifolium, and small specimens of E. guatemalense by the pale, ovate, rhizome scales and the lack of phyllopodia, and from E. squamipes by the generally more elliptic blade and the much lower elevation.
Distribution:
Mexico North America|
Mexico North America|