Notholaena rosei Maxon
Descripción
Rhizomes short-creeping, horizontal, 2–3 mm diam.; rhizome scales linear-lanceolate, 3 mm long, black, concolorous, sclerotic, lustrous, margins often very narrow, tan, weakly ciliate; fronds (8–)18–53 cm long, clumped; stipes 1⁄4–1⁄3 the frond length, stramineous (dark brown at bases), terete to slightly flattened on adaxially; blades narrowly elliptic, (2–)5–12 cm wide, slightly narrowed proximally, bipinnate-pinnatifid to tripinnate, subcoriaceous; rachises grooved, with short glandular hairs adaxially, white-farinose abaxially; pinnae 10–15 pairs, slightly inequilateral; adaxial surfaces with sparse white farina or distinct glands; abaxial surfaces densely white-farinose, occasionally only with dense, minute, glandular hairs (glands clear to white or pale yellow in type of C. X coruscans); laminar margins curved, somewhat thinner and erose; spores tan to black; 2n=60 (Oax).A
Ejemplar revisado
Jal (Palmer 701, GH, US; Pringle 2030, GH; Rzedowski 29352, NY). Oax (Mickel 6240, 6896, NY).A
Elevación
800 – 1050 mA
Ecología y Hábitat
Roadside and woody stream banks.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Notholaena rosei is distinct by the stramineous stipes and rachises, grooved rachises, and somewhat differentiated fertile blade margins.
Cheilanthes X coruscans was described from a very small plant that appeared to be distinct, but agrees with N. rosei in the pale sulcate rachises, bipinnate-pinnatifid blade dissection, somewhat differentiated margins, poorly developed farina, bicolorous rhizome scales, and the lesser axes darker (reddish brown) than the stramineous rachises.A
Cheilanthes X coruscans was described from a very small plant that appeared to be distinct, but agrees with N. rosei in the pale sulcate rachises, bipinnate-pinnatifid blade dissection, somewhat differentiated margins, poorly developed farina, bicolorous rhizome scales, and the lesser axes darker (reddish brown) than the stramineous rachises.A