Diplazium urticifolium Christ

Contenido

Descripción

Rhizomes erect, stout, trunk-like, to 30 cm tall; rhizome scales dark brown, ovate-lanceolate to linear-lanceolate, 4–5(–10) X 1.5–3 mm, entire; fronds 65–130(–150) cm long; stipes greenish to stramineous, 10–30 cm X 4–6 mm, 1⁄3–2⁄5 the frond length, scaly at very bases, otherwise glabrous; blades thick-herbaceous, 1-pinnate, 40–80 X 20–32 cm, narrowly oblong, apices pinnatifid, buds absent (ours) or, in most extraterritorial specimens, each blade bearing a bud in the axil of a distal pinna; rachises glabrous abaxially, with erect hairs 0.1–0.2 mm in rachial grooves adaxially; pinnae 7–20 pairs per blade, stalked 1.5–4(–10) mm, 12–18 X 2.5–3.5 cm, equilateral, bases truncate, apices long-acuminate, margins crenate or shallowly lobed 1⁄3 (or less) the distance to costae, lobes truncate or rounded, broader than long; veins free, pinnate, 3–4(–6) pairs per segment; indument adaxially of erect hairs 0.1–0.2 mm long in costal grooves, abaxially the blades glabrous; sori pinnate, 1–3(–4) pairs per lobe, with brown, ± entire indusia mostly 4–10 X 0.3–0.5 mm.
A

Forma de crecimiento

Hierba

Forma de vida

TerrestreA

Nutrición

Autotrófica

Ejemplar revisado

Chis (Breedlove 32184, DS, 32629, DS, NY; Croat 46695, MO). Oax (Hallberg 1558, NY, UC, US; Mickel 972, ISC, US, 5654, NY, UC; Rzedowski 34055, ARIZ, MO). Pue (Ventura A. 409, ENCB, NY). Ver (Lyonnet 550500002, MEXU; Riba et al. 385, MEXU, NY; Ventura A. 14374, ENCB, IEB).A

Distribución

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

Elevación

1000 – 1750 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

Diplazium urticifolium differs from congeners in Mexico by the combination of pinnatifid blade apices, shallowly lobed, equilateral pinnae, and 2–4 pairs of rather long, curving sori on regularly pinnate vein groups. Most specimens in Mesoamerica bear a bud in the axil of a distal pinna, but nearly all Mexican species appear to lack rachis buds.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]