Notholaena brachycaulis Mickel
Descripción
A N. brevistipes paribus pinnarum 14–16 (non (11–)17–25), paribus lobis pinnarum 5–7 (non 3–5), et farina aurantiaca distincta. (Gr., brachys, short, caulis, foot, alluding to the short stipes.)
Rhizomes compact, 3–4 mm diam.; rhizome scales linearlanceolate, ca. 3 mm long, orange-tan with narrow dark reddish brown ciliate margins, to concolorous dark reddish brown with age; fronds 10–20 cm long, clumped; stipes absent to 1/10 the frond length, atropurpureous, terete, with scattered scales like those of rhizomes; blades narrowly elliptic, pinnate-pinnatifid, 2–3 cm wide; rachises terete, slightly farinose, lacking hairs but with sparse bristles or toothed scales; pinnae 14–16 pairs, equilateral, short-petiolate ca. 0.5 mm, pinna lobes 5–7 pairs; adaxial blade surfaces slightly farinose; abaxial blade surfaces with pale yellow farina; laminar margins slightly curved, undifferentiated; spores tan or black.A
Rhizomes compact, 3–4 mm diam.; rhizome scales linearlanceolate, ca. 3 mm long, orange-tan with narrow dark reddish brown ciliate margins, to concolorous dark reddish brown with age; fronds 10–20 cm long, clumped; stipes absent to 1/10 the frond length, atropurpureous, terete, with scattered scales like those of rhizomes; blades narrowly elliptic, pinnate-pinnatifid, 2–3 cm wide; rachises terete, slightly farinose, lacking hairs but with sparse bristles or toothed scales; pinnae 14–16 pairs, equilateral, short-petiolate ca. 0.5 mm, pinna lobes 5–7 pairs; adaxial blade surfaces slightly farinose; abaxial blade surfaces with pale yellow farina; laminar margins slightly curved, undifferentiated; spores tan or black.A
Ejemplar revisado
Known only from the type collection. NL (Clausen 7619, MEXU, US)A
Distribución
México (país) EndémicoA
Elevación
610 mA
Ecología y Hábitat
Sandstone crevices along stream.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Notholaena brachycaulis closely resembles N. brevistipes in the very short stipes, but the former differs in having 14–16 pinna pairs (vs. (11–)17–25), 5–7 pairs of pinna lobes (vs. 3–5), and yellowish farina (vs. white).A