Notholaena aureolina Yatsk. & Arbeláez
Descripción
Rizomas 3 a 5 mm de diámetro, ascendentes; escamas del rizoma ovado-lanceoladas a linear-lanceoladas, 3 a 5 mm de largo, concoloras, ferrugíneas, margen entero. Hojas 10 a 30 cm de largo, 5 a 15 cm de ancho; pecíolos 10 a 15 cm de largo, surcados en la cara adaxial, con líneas de absición en su base, pardos, escamosos en la base, las escamas similares a las del rizoma, farinosos, glabros o pubescentes, si pubescentes los tricomas 0.8 a 1 mm de largo; láminas deltadas a pentagonales, 10 a 15 cm de largo, 2 a 3 pinnado-pinnatífidas; superficie adaxial glabra o con tricomas de 0.4 a 2 mm de largo, uniseriados, articulados, blanquecinos, localizados principalmente sobre las venas y hacia el margen; superficie abaxial sin escamas, con tricomas similares a los del lado adaxial sólo en el raquis, con farina amarilla; raquis surcados adaxialmente, pardos, glabros o con tricomas blanquecinos; pinnas deltadas, inequiláteras, ligeramente más desarrolladas basiscópicamente, 6 a 8 pares, cortamente pecioluladas; venas ramificadas. Indusios falsos reflejos, membranáceos, hialinos, 0.6 a 0.8 mm de ancho, margen entero, glabros o con escasos tricomas de 0.1 a 0.2 mm de largo; esporas 32 en cada esporangio, globosas, ornamentación granulada, pardo-oscuras, 65 a 87 µ de diámetro ecuatorial (basado en R. M. Fonseca 2028). Gametofitos con farina.A
Forma de vida
TerrestreB
Elevación
450 – 2550 mB
Ecología y Hábitat
On banks and among rocks in dryish woods.B
Tipo de vegetación
Selva baja, Selva medianaA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
(In relation to the synonym Cheilanthes aurea var. aurea)
Var. aurea is distinct from var. palmeri in having indusial margins entire, blade hairs 0.5 mm, indusial hairs 0.1–0.2 mm, stipe hairs 1 mm, farina abundant, blades deltate to pentagonal, and pinnae 6–8 pairs; 2n=60 (Oax).
Distribution. Roadside banks and wooded river banks; 450–1050 m. Mexico; Guat, Salv.
Selected Specimens Examined. Gro (Berkley et al. 17M757, F; Mickel 726, NY; both intermediate between the two varieties). Méx (Hinton 6137, US). Mor (Sandoval 36, 42, UAMIZ). Oax (Mickel 845, 6228a, 6249, 6269, 6945, NY).
Cheilanthes aurea var. aurea is distinguished by its yellowfarinose abaxial blade surfaces and deltate, tripinnate to tripinnate-pinnatifid blades. It is close to var. palmeri in dissection, having yellow farina, broad rhizome scales, broad indusia, and large black spores, but var. aurea has fewer and shorter hairs on blade margins (0.5 vs. 1 mm), indusia (0.1–0.2 vs. 0.5 mm), and stipes (mostly 1 vs. 2 mm), abundant farina (vs. very sparse), lanceolate blades (vs. deltate), fewer pinna pairs (6–8 vs. 9–12), and blades 5–7 cm vs. 6–13 cm wide.
B
Var. aurea is distinct from var. palmeri in having indusial margins entire, blade hairs 0.5 mm, indusial hairs 0.1–0.2 mm, stipe hairs 1 mm, farina abundant, blades deltate to pentagonal, and pinnae 6–8 pairs; 2n=60 (Oax).
Distribution. Roadside banks and wooded river banks; 450–1050 m. Mexico; Guat, Salv.
Selected Specimens Examined. Gro (Berkley et al. 17M757, F; Mickel 726, NY; both intermediate between the two varieties). Méx (Hinton 6137, US). Mor (Sandoval 36, 42, UAMIZ). Oax (Mickel 845, 6228a, 6249, 6269, 6945, NY).
Cheilanthes aurea var. aurea is distinguished by its yellowfarinose abaxial blade surfaces and deltate, tripinnate to tripinnate-pinnatifid blades. It is close to var. palmeri in dissection, having yellow farina, broad rhizome scales, broad indusia, and large black spores, but var. aurea has fewer and shorter hairs on blade margins (0.5 vs. 1 mm), indusia (0.1–0.2 vs. 0.5 mm), and stipes (mostly 1 vs. 2 mm), abundant farina (vs. very sparse), lanceolate blades (vs. deltate), fewer pinna pairs (6–8 vs. 9–12), and blades 5–7 cm vs. 6–13 cm wide.
B