Notholaena standleyi Maxon
Descripción
Rhizomes compact, horizontal, 1–1.5 mm diam.; rhizome scales lanceolate, 2–3 mm long, bicolorous with broad dark brown to black, sclerotic, lustrous central streak and pale entire margins; fronds 9–23 cm long, clumped; stipes ca. 3⁄4 the frond length, castaneous, terete, lustrous, glabrous except for a few broadly lanceolate scales at bases (2 X 1 mm); blades broadly pentagonal, 2.5–7 cm wide, pinnatifid above basal pinnae, with the suprabasal pinnae usually shortened, basal pinnae pinnatifid with one basiscopically exaggerated pinnatifid basal pinnule; adaxial surfaces glabrous; abaxial surfaces densely pale yellow-to deep yellow-farinose; laminar margins slightly curved; sporangia 32- or 16-spored; spores tan to black; 2n=60 (Oax, USA).A
Forma de vida
Epipétrica, TerrestreB
Ejemplar revisado
BCN (Moran 18714, ENCB). BCS (Carter 2049, MEXU, US). Chih (Pringle 467, NY). Coah (Palmer 1379, NY). Dgo (Purpus 4632, US). Hgo (Rose 9107, US). NL (Rodríguez L. & Sauceda M. 412, ANSM). Oax (Mickel 4490, NY). Pue (Purpus 4027, NY). Sin (Pitelka 286B, UC). SLP (Parry 992, NY). Son (Lumholtz Exped. 361, NY). Tam (Bartlett 10708, US).A
Elevación
380 – 2200(– 3100) mA
Ecología y Hábitat
Calcareous or noncalcareous cliffs, igneous rocks, sandstone, rock crevices, among large boulders and cliffs, limestone outcrops.A
Tipo de vegetación
Matorral rosetófiloB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
The farina varies in color geographically. In Sonora, Chihuahua, and part of Coahuila the farina is very pale yellow, to nearly white in some Chihuahuan specimens. In part of Coahuila and in San Luis Potosí, the farina is deep yellow, and in Puebla and Oaxaca pale yellow.
Windham (in FNA Ed. Comm., 1993) reported that the low number of spores per sporangium in N. standleyi is apparently not associated with apogamy since all plants analyzed were sexual diploids. Siegler and Wollenweber (1983) identified three chemotypes in this species; these correlate with substrate specificity, range, and variations in farina color.
A
Windham (in FNA Ed. Comm., 1993) reported that the low number of spores per sporangium in N. standleyi is apparently not associated with apogamy since all plants analyzed were sexual diploids. Siegler and Wollenweber (1983) identified three chemotypes in this species; these correlate with substrate specificity, range, and variations in farina color.
A
Bibliografía
B. Velázquez Montes, E. 2019: Familia Pteridaceae. En: Rzedowski, J. & Hernández Ledesma, P. (Eds.). Fl. Bajío Regiones Adyacentes Fasc. 210: 1-249
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]