Elaphoglossum mcvaughii

Elaphoglossum mcvaughii

Content

Altitude

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    • Categoría IUCN

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    • Categoría NOM-059-SEMARNAT-2010

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    • Description

    Rhizomes long-creeping, ca. 3 mm diam.; rhizome scales ovate to ovate-lanceolate, tan to orange-tan, at least some with lustrous black or dark brown streaks, mostly 3–5 mm long, generally entire, scales somewhat deciduous; fronds 1–2 cm apart, 21–40 X 1.5–2.9 cm; phyllopodia distinct, 1–2 cm long; stipes 1⁄3–1⁄2 of the frond length, with scattered ovate scales similar to those of the rhizomes, entire or with occasional weak marginal hairs; blades narrowly elliptic, apices acute to acuminate, bases narrowly cuneate; coriaceous; veins obscure, free, simple or once-forked, ca. 1 mm apart, at ca. 70° angle to costa; hydathodes absent; blade surfaces subglabrous, with sparse, minute, stellate trichomidia and occasional broader scales on the costae, especially on the abaxial surfaces; fertile fronds longer than the sterile fronds, the stipes longer (1⁄2–2⁄3 of the frond length) and the blades slightly narrower, scales absent from abaxial surfaces.A
    A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

    Discussion

    Elaphoglossum mcvaughii is similar to E. affine in the bicolorous rhizome scales, creeping rhizomes, rhizome scale morphology (entire with occasional weak teeth or marginal hairs), fertile fronds longer than the sterile, blade texture, and indument; however, the former species has acuminate rather than acute to rounded blades and generally greater dimensions. It also resembles E. seminudum, but differs in having bicolorous rhizome scales that are more spreading (vs. appressed).B
    B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

    Distribution

    El Salvador presentC, Guatemala presentC, México (Country) native and not endemicC
    C. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

    Estatus del taxón

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    • Forma de crecimiento

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    • Forma de vida

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    • Habitat & Ecology

    On rocks in ravines.D
    D. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

    Nutrición

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    • Specimen

    Chis (Breedlove 65796A, CAS). Mich (Díaz B. & Zamudio 2671, IEB; Rzedowski 46175, IEB; Santos Martínez 1999, ENCB, IEB). Oax (Lorence 4619, ENCB, MEXU; Mickel 6614, NY; Pérez Cruz C12, MEXU).
    E
    E. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

    Tipo de vegetación

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    • Synonymy

    Elaphoglossum mcvaughii Mickel, Brittonia 32: 336 (-337). 1980