Selaginella peruviana Hieron.

Contenido

Descripción

Stems prostrate, forming loose mats, not readily fragmenting, dorsiventral, irregularly forked, branch tips upturned; rhizophores borne throughout stem length, 0.2–0.3 mm diam.; leaves of one kind (isophyllous) throughout stem length, tightly appressed, green, apices aristate, aristae whitish, 0.3–0.8 mm long; upperside leaves linear-lanceolate on central rows to falcate on marginal rows, 2.3–2.8 X 0.5–0.65 mm, bases abruptly adnate, pubescent, margins ciliate, cilia transparent to opaque, ascending or spreading, 0.1–0.2 mm; underside leaves linear-lanceolate on central rows to falcate on marginal rows, 2.5–4 X 0.4–0.6 mm, bases decurrent to oblique on marginal rows, pubescent or sometimes glabrous, margins ciliate, cilia hyaline to opaque, spreading at base, ascending toward apex, 0.1–0.2 mm; strobili quadrangular, 0.5–2 cm long; sporophylls monomorphic; megaspores yellow to orange, rugose-reticulate; microspores orange.A

Forma de crecimiento

Hierba

Forma de vida

Epipétrica, TerrestreA

Nutrición

Autotrófica

Ejemplar revisado

Ags (Rzedowski 25004, ENCB). Chih (Harvey 1454, MICH). Coah (Stanford et al. 118, ARIZ). DF (Knobloch 1060, MICH, UC). Dgo (Pennell 18126, PH). Gto (Rzedowski 4788a, NY). Hgo (Steyermark 52276, F). Jal (Rollins & Tryon 58320, MICH). Mich (Díaz-Barriga 4745, NY). NL (Hinton et al. 20938, TEX). Oax (Mickel 4496, NY). Pue (Arsène 7087, MEXU). Qro (Pérez & Zamudio 3583, NY). SLP (Lundell 56, MICH). Son (Phillips 800, MICH). Tlax (Vibrans 385, MEXU). Ver (Barrington 450, MEXU). Zac (Pennell 17476, PH).
Unverified, Doubtful, or Mistaken Reports. Méx (Schaffner 933, GH, YU, cited by R. Tryon, 1955, but not verified).
A

Distribución

México (país) Nativo y no endémicoA, Norteamérica al N de México PresenteA, Sudamérica PresenteA

Elevación

1600 – 2300 mA

Ecología y Hábitat

On rocky slopes, rock crevices, ledges of sandstone or igneous cliffs, less often on sandy or clay soil.A

Tipo de vegetación

Matorral de otro tipoB

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

Selaginella peruviana can be distinguished from S. arizonica by its underside leaves widest at base (vs. at middle), leaf apices each with a terete arista 0.3—0.8 mm long (vs. flattened, 0.1–0.3 mm long), and sporophylls aristate (vs. acute to acuminate).A

Bibliografía

A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88

B. Madrigal González D. 2021: Selaginellaceae. En: Rzedowski, J. & Calderón de Rzedowski, G. (Eds.). – Flora del Bajío y de regiones adyacentes 220: 1-37

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]