Adiantum latifolium Lam.

Contenido

Descripción

Rhizomes long-creeping, ca. 2–3 mm diam.; rhizome scales concolorous, light brown with thick, dark brown cell walls, 2–3 X 0.5–0.8 mm, margins entire to sparsely denticulate; fronds distant, 30–75 cm long, arching; stipes atropurpureous, 30–50 cm X 2–3 mm, 1⁄2–2⁄3 the frond length, with pectinate scales to 3 mm, glabrescent; blades deltate, 2-pinnate, 20–32 cm wide, each blade with a conform terminal pinna; rachises atropurpureous, with tan pectinate scales mostly 1–2 mm long; pinnae 1–4 pairs, alternate, proximal pinnules reduced, stalk color stopping ± abruptly at pinnule bases; pinnules denticulate, stalked to 1 mm, largest 20–55 X 6–12 mm, distal pinnules on each pinna ca. 1⁄2 the length of the longest pinnules, tips acute to rounded, nonarticulate; veins free, forking; ending in small teeth; indument absent on both sides of blades, often glaucous abaxially; idioblasts present on both blade surfaces but often rather faint abaxially; sori to 18 per pinnule, on acroscopic and basiscopic margins; indusia 1–5 mm long, oblong to linear, glabrous; 2n=120 (Jam).
A

Forma de crecimiento

Hierba

Forma de vida

TerrestreA

Nutrición

Autotrófica

Ejemplar revisado

Chis (Breedlove 34142, DS; Matuda 3678, MEXU, NY, US). Oax (Hallberg 1483, MEXU, NY; Mexia 9182, GH, MICH, NY, UC; Mickel 5774, 6849, NY, UC). Tab (Jiménez González 17139, GUADA, UC; Ventura A. 20383, IEB). Ver (Copeland herb. 121, MEXU, MICH, NY, UC; Rzedowski 18890, MEXU). Unverified, Doubtful, or Mistaken Reports. Jal (reported by Mickel & Beitel, 1988, but the specimens are all A. mcvaughii). Nay (reported by Mickel & Beitel, 1988, but the specimens are all A. mcvaughii). QR (Torres 715, CIQRO, cited by Palacios-Rios, 2002c, but not verified).A

Distribución

Caribe PresenteA: Antillas Mayores PresenteA; Antillas Menores PresenteA, Centroamérica: Belice PresenteA; Costa Rica PresenteA; El Salvador PresenteA; Guatemala PresenteA; Honduras PresenteA; Nicaragua PresenteA; Panamá PresenteA, México (país) Nativo y no endémicoA, Sudamérica PresenteA

Elevación

50 – 600 mA

Ecología y Hábitat

In lowland.A

Tipo de vegetación

Selva alta, Selva baja, Selva medianaA

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

Among the Mexican species with idioblasts on the adaxial epidermis, this bipinnate species is distinguishable by its longcreeping rhizomes and large, acute pinnules. The closest relative in Mexico is probably A. mcvaughii.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]