Elaphoglossum xanthopodum
Description
Ab E. sartorii squamis rhizomatis longibus linearibus aurantiacis abstans. (Greek, xanthos, gold, pous, foot, referring to the golden rhizome scales.)
Rhizomes compact, short-creeping, 5–8 mm diam.; rhizome scales linear, orange, mostly ca. 10 mm long, somewhat lustrous, with irregular hair-like lateral projections, especially near the scale apices; fronds clumped, approximate to 0.5 cm distant, 15–48(–60) X 1.8–3.8(–5.5) cm; phyllopodia distinct, 1–1.5 cm long; stipes (1⁄10–)1⁄4–2⁄5 the frond length, clothed with scattered linear scales with prominent projections or dissected scales, extending onto the proximal portion of the costae, usually dark, especially at blade bases; blades narrowly elliptic, bases narrowly to broadly cuneate, apices acute to acuminate, subcoriaceous to coriaceous; veins obscure, free, simple to 2-forked, ca. 1 mm apart, at 70–80° angle to costa; hydathodes absent; adaxial surfaces glabrous; abaxial surfaces glabrous or with sparse to scattered, minute, stellate trichomidia; fertile fronds equalling or somewhat surpassing the sterile in length, stipes (1⁄6–)1⁄3–1⁄2 the frond length, blades 1⁄2–2⁄3 the sterile blade length, intersporangial scales absent.
A
A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Rhizomes compact, short-creeping, 5–8 mm diam.; rhizome scales linear, orange, mostly ca. 10 mm long, somewhat lustrous, with irregular hair-like lateral projections, especially near the scale apices; fronds clumped, approximate to 0.5 cm distant, 15–48(–60) X 1.8–3.8(–5.5) cm; phyllopodia distinct, 1–1.5 cm long; stipes (1⁄10–)1⁄4–2⁄5 the frond length, clothed with scattered linear scales with prominent projections or dissected scales, extending onto the proximal portion of the costae, usually dark, especially at blade bases; blades narrowly elliptic, bases narrowly to broadly cuneate, apices acute to acuminate, subcoriaceous to coriaceous; veins obscure, free, simple to 2-forked, ca. 1 mm apart, at 70–80° angle to costa; hydathodes absent; adaxial surfaces glabrous; abaxial surfaces glabrous or with sparse to scattered, minute, stellate trichomidia; fertile fronds equalling or somewhat surpassing the sterile in length, stipes (1⁄6–)1⁄3–1⁄2 the frond length, blades 1⁄2–2⁄3 the sterile blade length, intersporangial scales absent.
A
Discussion
This species belongs to the E. sartorii complex but is distinct in the long, linear, orange rhizome scales.B
B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
Distribution
México (Country) endemicC
Specimen
Chis (Breedlove 21972, NY). Oax (Geith 95-MO74, NY; Hallberg 1671, NY; Mickel 854, 1128, 1620, 7386, NY). Pue (Sánchez M. 640, US). Ver (Purpus 16580, US; Riba et al. 403, NY).
D
D. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
D
Synonymy
Elaphoglossum xanthopodum, Mem. New York Bot. Gard. 88: 314 (f.125F-G). 2004