Pleopeltis acicularis (Weath.) A.R.Sm. & T.Krömer

Primary tabs

Pleopeltis acicularis (Weath.) A.R.Sm. & T.Krömer

Descripción

Distinct by the abaxial laminar surfaces having a mixture of round, lanceolate, and acicular scales, the last concentrated near pinna margins, and by the adaxial laminar surfaces with sparse to scattered scales.A

Forma de crecimiento

Hierba

Forma de vida

o epipétrica. EpífitaA

Nutrición

Autotrófica

Ejemplar revisado

(Related to the synonym Polypodium polypodioides var. aciculare) Chis (Breedlove 27721, NY). Col (Esperón 18292, GUADA). DF (Rusby 332, NY). Dgo (Bashor 694, NY). Gro (Hinton et al. 9435, NY). Gto (Rzedowski 40576, IEB). Hgo (Dunn & Dunn 19025, NY). Jal (McVaugh 16198, MICH). Méx (Hinton et al. 4162, NY). Mich (González Quintero 1683, NY). Mor (Lyonnet 772, MEXU, NY). Nay (Solorzano 16912, GUADA). Oax (Mickel 3916, NY). Pue (Orcutt 4023, US). Qro (Fernández N. 3743, NY). Rev (Barkelew 236, NY, US). Sin (Breedlove 18184, NY—intermediate with var. knoblochianum). SLP (King 4439, NY). Ver (Purpus 5799, NY). Zac (Rzedowski & McVaugh 936, NY—intermediate with var. knoblochianum).
Unverified, Doubtful, or Mistaken Reports. Ags (Siqueiros 4339, HUAA, and three other collections, cited by Siqueiros-Delgado & González-Adame, 2004 [without variety but presumed to be var. aciculare], but not verified).A

Distribución

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

Elevación

500 – 2400 mA

Ecología y Hábitat

At middle elevations.A

Tipo de vegetación

Bosque de pino-encinoA

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 polypodioides var. aciculare) This is the most widespread variety of P. polypodioides in Mexico, the other three varieties being rather limited in distribution: var. michauxianum in northeastern states and Chiapas, var. polypodioides in southeastern states, and var. knoblochianum in northwestern states.
Var. aciculare has the adaxial blade surfaces sparsely scaly, abaxial surfaces at least somewhat scaly, especially along the margins, and the scales with small dilated bases and acicular tips. Var. michauxianum has the adaxial surfaces glabrous, the abaxial surfaces with scales round to deltate-ovate, obtuse or acute, none with acicular tips; it is diploid, 2n=74 (SLP). Var. aciculare can be distinguished by the mixture of acicular scales on the abaxial laminar surface, although the percentage of acicular scales is rather variable, sometimes only at the margins, sometimes with a few near the pinna center, and occasionally with some scattered, but never wholly acicular as in var. knoblochianum.
Most specimens of P. polypodioides from Sinaloa, Durango, and Zacatecas are intermediate between vars. knoblochianum and aciculare.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]