Elaphoglossum leebrowniae
Description
Ab E. sartorii squamis rhizomatum grandioribus nigrescentibus differt. (Dedicated to the senior author’s research assistant, Leone (Lee) Brown, who did so much to bring this manuscript to completion.)
Rhizomes compact, stout, 5–8 mm diam.; rhizome scales linear-lanceolate, mostly 15–20 X 2 mm, orange-tan, tinged with lustrous black, with attenuate apices and irregular hair-like lateral projections; fronds 30–60 X 3.7–6.5 cm, 0.5–1.5 cm distant; phyllopodia distinct, ca. 1 cm long; stipes 1⁄3–2⁄5 the frond length; blades narrowly elliptic, bases cuneate at 25–50° angle, apices acute to acuminate, coriaceous; veins obscure, free, simple to 2-forked; hydathodes absent; adaxial surfaces glabrous or with sparse dark trichomidia; abaxial surfaces with scattered dark brown stellate trichomidia, mostly 0.2–0.4 mm; fertile fronds slightly shorter to slightly longer than the sterile, stipes ca. 1⁄2 the frond length, the blades 2⁄5–3⁄4 the width of the sterile, intersporangial scales absent.
A
A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Rhizomes compact, stout, 5–8 mm diam.; rhizome scales linear-lanceolate, mostly 15–20 X 2 mm, orange-tan, tinged with lustrous black, with attenuate apices and irregular hair-like lateral projections; fronds 30–60 X 3.7–6.5 cm, 0.5–1.5 cm distant; phyllopodia distinct, ca. 1 cm long; stipes 1⁄3–2⁄5 the frond length; blades narrowly elliptic, bases cuneate at 25–50° angle, apices acute to acuminate, coriaceous; veins obscure, free, simple to 2-forked; hydathodes absent; adaxial surfaces glabrous or with sparse dark trichomidia; abaxial surfaces with scattered dark brown stellate trichomidia, mostly 0.2–0.4 mm; fertile fronds slightly shorter to slightly longer than the sterile, stipes ca. 1⁄2 the frond length, the blades 2⁄5–3⁄4 the width of the sterile, intersporangial scales absent.
A
Discussion
Elaphoglossum leebrowniae is distinct in the E. sartorii complex by its rhizome scales large, spreading, tinged with black, and fertile fronds about half as broad as the sterile.B
B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Distribution
México (Country) endemicC
Specimen
Chis (Breedlove 15292, 22014, 22093, 23036, NY; Laughlin 166, NY; Shilom Ton 694, NY). Oax (Diggs 3886, NY; Lorence 4207, NY; Mickel 4124, 4362, 6521, NY; Torres C. 10703, NY).
D
D. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
D
Synonymy
Elaphoglossum leebrowniae, Mem. New York Bot. Gard. 88: 296 (f.125A-C). 2004