Elaphoglossum albomarginatum
Description
Rhizomes short-creeping, stout, to 10 mm diam.; rhizome scales orange to brown, ribbon-like or nearly hair-like, to 10 mm long; fronds clumped, 26–60 X 5–8.5 cm; phyllopodia absent; stipes 1⁄3–1⁄2 the frond length, with spreading, subulate scales or glabrous, usually with minute, erect, glandular hairs; blades lanceolate, apices acute to acuminate, rarely caudate, bases rounded; veins evident, free, 1–2-forked, 1.5–2 mm apart, at 70–80° angle to costa; hydathodes absent; margins pale, ca. 0.5 mm wide; blades completely lacking scales, but with minute, black, stellate hairs; fertile fronds smaller than the sterile, with a conspicuous sterile margin ca. 1 mm wide, scales absent on abaxial costa and among the sporangia.A
A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Discussion
Elaphoglossum albomarginatum closely resembles a large specimen of E. pallidum, but differs not only in size but also in the rhizome scales and the pale margins on both the sterile and fertile blades. Marginal blade scales are absent in E. albomarginatum, whereas in E. pallidum at least an occasional marginal scale is found.B
B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Specimen
Known in Mexico only from the type. Chis (Breedlove 31629, DS!).D
D. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Synonymy
Elaphoglossum albomarginatum, Proc. Calif. Acad. Sci. ser. 4, 40: 220. 1975