Notholaena meridionalis Mickel
Descripción
A N. lemmonii stipitibus non sulcatis et squamis rhizomatum concoloribus nigrescentibus distincta. (L., meridionalis, south, alluding to the more southerly distribution than its close relative N. affinis.)
Rhizomes compact, horizontal, 2 mm diam.; rhizome scales linear-lanceolate, ca. 3 mm long, concolorous, dark reddish brown, sclerotic, lustrous, margins short-ciliate-denticulate; fronds 7–23 cm long, clumped; stipes ca. 1⁄6 the frond length, atropurpureous to black, terete, with narrowly deltate, bicolorous scales (dark reddish brown with pale center) toward the base; blades narrowly oblong, pinnate-pinnatifid, 1.5–3 cm wide; rachises puberulent adaxially with short brown hairs less than 0.1 mm arranged in two rows; pinnae 8–18 pairs, equilateral, shortpetiolate (less than 1 mm), costae dark abaxially, pinnae mostly cut 2⁄3–4⁄5 to the midvein; adaxial blade surfaces glabrous; abaxial blade surfaces pale yellow-farinose; laminar margins slightly curved; spores tan to black.A
Rhizomes compact, horizontal, 2 mm diam.; rhizome scales linear-lanceolate, ca. 3 mm long, concolorous, dark reddish brown, sclerotic, lustrous, margins short-ciliate-denticulate; fronds 7–23 cm long, clumped; stipes ca. 1⁄6 the frond length, atropurpureous to black, terete, with narrowly deltate, bicolorous scales (dark reddish brown with pale center) toward the base; blades narrowly oblong, pinnate-pinnatifid, 1.5–3 cm wide; rachises puberulent adaxially with short brown hairs less than 0.1 mm arranged in two rows; pinnae 8–18 pairs, equilateral, shortpetiolate (less than 1 mm), costae dark abaxially, pinnae mostly cut 2⁄3–4⁄5 to the midvein; adaxial blade surfaces glabrous; abaxial blade surfaces pale yellow-farinose; laminar margins slightly curved; spores tan to black.A
Ejemplar revisado
Oax (Matuda 205, MEXU, US; Mickel 4214, NY; Torres C. 385, 479, MEXU). Guat (Maxon & Hay 3417, NY). Salv (Seiler 88, NY). Nic (Stevens 14893, NY). CR (Boyle 6015, NY; Lems 64090803, NY).
A
A
Elevación
300 – 700 mA
Ecología y Hábitat
Dry, rocky slopes.A
Tipo de vegetación
Selva bajaB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Notholaena meridionalis resembles N. lemmonii in its narrow, farinose blades, but can be distinguished by its non-sulcate stipes and rachises. Plants of N. meridionalis have been called Notholaena affinis (Tryon, 1956), but a photograph of the type of N. affinis shows that it has more pinnae and is the same as N. angusta (see comments under N. affinis). Thus, plants treated as Notholaena affinis by Stolze (1981), Mickel and Beitel (1988, as Cheilanthes affinis), and Yatskievych (in Davidse et al., 1995) need a name.A
Bibliografía
B. Departamento de Botánica, Instituto de Biología (IBUNAM): Notholaena affinis (Mett.) T. Moore, ejemplar de Torres C. 385: Herbario Nacional de México (MEXU), Plantas Vasculares. En Portal de Datos Abiertos UNAM (en línea), México, Universidad Nacional Autónoma de México. – https://datosabiertos.unam.mx/IBUNAM:MEXU:506027 [accessed 2025-01-17 09:23]