Asplenium breedlovei A.R. Sm.

Primary tabs

Asplenium breedlovei A.R. Sm.

Descripción

Roots fibrous, not proliferous; rhizomes short-creeping; rhizome scales dark brown to blackish, clathrate, 1–3 X 0.2–0.3 mm; fronds few, 1–3 per plant, to ca. 50 cm long; stipes atropurpureous or brown, dull, mostly 10–25 cm X ca. 2 mm, 1⁄3–1⁄2 the frond length, glabrous, without adaxial wings; blades chartaceous, deltate, to 35 X 15 cm, nearly 4-pinnate proximally, gradually tapering toward apices, buds absent, blades not rooting at tips; rachises darkened proximally, greenish distally, glabrous, not winged; pinnae to 8–12 pairs, ascending, to 10 X 3 cm, not articulate, stalked to 3 mm, pinnules pinnate-pinnatifid, cuneiform, mostly 2–5-lobed, ultimate segments to 1.5mm wide, acute or subacute at tips; veins 2–3-forked in the ultimate segments, visible on both sides, terminating in linear hydathodes near the margins; indument abaxially of scattered, tan appressed clavate hairs ca. 0.1 mm long; sori 1–2 per ultimate segment; indusia whitish to tan, 1.5–3 X 0.3–0.6 mm, margins entire or slightly erose; spores globose (Adams in Davidse et al., 1995).A

Forma de vida

TerrestreA

Forma de crecimiento

Hierba

Nutrición

Autotrófica

Distribución

Guatemala presentB, Honduras presentB, México (Country) native and not endemicB

Elevación

15001800 mA

Tipo de vegetación

Bosque de neblina/mesófiloA

Categoría IUCN

No incluidaC

Categoría NOM-059-SEMARNAT-2010

No incluidaD

Estatus del taxón

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

Discusión taxonómica

The most similar Mexican species are A. solmsii and A. insolitum, from which A. breedlovei differs in having creeping rhizomes. The nearest affinities of A. breedlovei are obscure; it seems to be a rather isolated species, and is unusual in the genus because of the creeping rhizomes. It does not appear closely related to sect. Hymenasplenium, species of which regularly have creeping rhizomes.A

Bibliografía

A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
B. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
C. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
D. 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]