Pleopeltis muenchii (Christ) A.R.Sm.

Primary tabs

Pleopeltis muenchii (Christ) A.R.Sm.

Descripción

Rhizomes long-creeping, 2.5–3(–4) mm diam., glaucous; rhizome scales 4–6 X 1.5–2 mm, lustrous golden to reddish brown, ovate-lanceolate, deeply cordate (pseudopeltate), entire to erose; fronds 8–25 cm long, distant, usually 1–3 cm apart; stipes ca. 1⁄2 the frond length, castaneous to darkly castaneous, with sparse, appressed, ovate scales; blades pinnatisect, 4–10 cm wide, with a conform terminal pinna; rachises and costae pale to castaneous, prominent; pinnae 1–2 pairs, 4.5–6.5 cm X 7–14 mm; adaxial laminar surfaces glabrous; abaxial laminar surfaces with sparse, minute, round to lanceolate scales with reddish centers, margins pale, serrulate, 0.8–1 X 0.3 mm; blade texture coriaceous; veins netted but not evident; nectaries borne on acroscopic side of pinna bases; sori large, round, medial, soral scales peltate, 0.8 mm wide, centers reddish brown, margins pale brown, erose; sporangia glabrous.A

Forma de crecimiento

Hierba

Forma de vida

EpífitaA

Nutrición

Autotrófica

Ejemplar revisado

(Related to the synonym Polypodium muenchii) Chis (Breedlove 6692, 7811, US; Carlson 1680, US; Laughlin 162, US; Little & Sharp 9948, US; Mickel 1229, US). Oax (Campos V. 882, NY; Mickel 1141, 4330, NY; Torres C. 10916, NY).A

Distribución

Centroamérica: El Salvador PresenteA; Guatemala PresenteA; Honduras PresenteA, México (país) Nativo y no endémicoA

Elevación

2400 – 3000 mA

Ecología y Hábitat

At higher elevations.A

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

(In relation to the synonym) Polypodium muenchii is distinct in its pinnatifid blades, lustrous brown rhizome scales, and occurrence at high elevations. Young sori with roundish scales caused Smith (1981) and Mickel and Beitel (1988) to place it in Pleopeltis, but the soral scales in fact are not peltate but cordate-based. The distinctness of this species caused Gómez (1985) to erect the genus Microphlebodium. Recently, a simple-bladed species, P. microgrammoides (which see), was discovered in this group.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]