Elaphoglossum auricomum (Kunze) T.Moore

Primary tabs

Elaphoglossum auricomum (Kunze) T.Moore

Descripción

Rhizomes short-creeping, to 5 mm diam.; rhizome scales linearlanceolate, orange-tan, to 7 mm long, margin with hair-like teeth; fronds clumped, 18–50 X 1.6–3.2 cm; phyllopodia inconspicuous or absent; stipes 1⁄8–1⁄4 the frond length, densely clothed with spreading, orange scales 4 mm long; blades narrowly elliptic, papyraceous, apices acuminate, bases narrowly cuneate; veins indistinct, free, simple or once-forked, 1–2 mm apart, at 60–70° angle to costa; hydathodes absent; blade scales orange, scattered, not overlapping, skeletonized, linear, 1–4 mm long with long, hair-like teeth, the teeth at least half as long as the scales, some scales reduced to nearly stellate hairs; fertile fronds with longer stipes, ca. 1⁄3 the fertile frond length, with a few stellate hairs on the abaxial costa.A

Forma de crecimiento

Hierba

Forma de vida

EpífitaA

Nutrición

Autotrófica

Ejemplar revisado

Chis (Breedlove 32937, DS; 38933, DS; Martínez S. 23961, MEXU). Oax (Mickel 6442, NY; Yatskievych 83-407, ARIZ). Ver (Hernández M. 1385, MEXU; Lira 227, XAL; Müller 386, NY).
A

Distribución

Caribe PresenteA, Centroamérica: Costa Rica PresenteA; Guatemala PresenteA; Honduras PresenteA, México (país) Nativo y no endémicoA, Sudamérica PresenteA

Elevación

180 – 1250 mA

Tipo de vegetación

Bosque de neblina/mesófiloA

Categoría IUCN

No incluidaB

Categoría NOM-059-SEMARNAT-2010

No incluidaC

Estatus del taxón

(A) Como definida actualmente, probablemente una entidad natural (monofilética)

Discusión taxonómica

This species is close to E. vestitum in the skeletonized blade scales and the general laxness of the fronds, but differs in several features. Elaphoglossum auricomum lacks caudate blade tips, the rhizome scales are not as dark, and the stipes are densely covered with spreading orange scales. It also resembles E. paleaceum, but the rhizome scales are dark orange or maroon, not black as usually
found in E. paleaceum, and the blade scales are more sparse and more highly dissected than in that species. Some specimens have very short stipes, but apparently this character is quite variable in E. auricomum.
A

Bibliografía

A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
B. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]