Asplenium pteropus Kaulf.

Primary tabs

Asplenium pteropus Kaulf.

Descripción

Roots fibrous, not proliferous; rhizomes erect; rhizome scales brown to blackish, clathrate, tips twisted and long-attenuate, 6–9 X 0.3–0.5 mm, entire; fronds pendent, clumped, 25–45(–60) cm long; stipes stramineous, green or gray-green, 2–8 cm X 1 mm, ca. 1⁄6–1⁄4 of frond length, glabrous, with green wings 0.5–1 mm wide; blades thin-chartaceous, 1-pinnate with pinnatifid apices, 20–40 X 5–8 cm; rachises stramineous, dull, glabrous, with green wings 0.5–1 mm wide; pinnae oblong, inequilateral, subfalcate, ca. 25–40 pairs, 3–4 X 0.7–1 cm, basiscopic bases excavate, subauriculate acroscopically, not overlapping rachises, pinna apices acuminate, margins serrate with rounded teeth, sinuses 1–2 mm deep; veins mostly simple except for basal acroscopic veins, readily visible on both sides, tips expanded adaxially; indument abaxially absent; sori (4–)9–11 pairs per pinna on both sides of midveins, none on basal, forked veins; indusia 1.5–3 X 0.3–0.6 mm, margins entire; spores reniform; 2n=72 (Oax).A

Forma de crecimiento

Hierba

Forma de vida

Epipétrica, EpífitaA

Nutrición

Autotrófica

Ejemplar revisado

Chis (Breedlove 32180, DS, MEXU, 58438, CAS, ENCB, NY; Cabrera 1819, MEXU, MO). Oax (Mickel 1023, 1369A, NY, 5659, ENCB, NY, UC). Pue (Ramírez R. 26, XAL). Ver (Ortega O. et al. 1142, ENCB, MEXU, XAL; Vásquez B. & Avendano 1574, XAL; Ventura A. 11613, MEXU, XAL).A

Distribución

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

Elevación

1000 – 1600 mA

Ecología y Hábitat

In wet forests and rarely on wet rocks.A

Tipo de vegetación

Bosque de neblina/mesófilo, Selva altaA

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 closely related to the previous one, A. pseuderectum, and also resembles A. miradorense and A. harpeodes. Asplenium pteropus differs from these by having stipes alate to their bases. It is nearly always epiphytic, or rarely epipetric on mossy rocks, whereas A. miradorense is nearly always terrestrial. A revision of this group (having 1-pinnate proximally reduced blades, winged rachises, and toothed pinnae) is greatly needed. Several specimens identified as this species by Mickel and Beitel (1988) are A. miradorense, e.g., Hernández G. 1323, 1540 (NY).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]