Ctenitis ursina A.R.Sm.
Descripción
Rhizomes not known, but probably suberect, stout; fronds large, to ca. 130 cm long or more; stipes tan, 1⁄3–1⁄2 the frond length, to ca. 50+ X 1 cm, bases and also distal part very densely covered with spreading, lustrous, brown, lanceolate scales to 10 X 1 mm; blades dark green, 3-pinnate-pinnatifid, broadly deltate, to 75 X 70 cm; rachises abaxially with scales similar to those of stipes, but smaller and lighter colored; pinnae ca. 10–12 pairs, proximal ones stalked 1 cm, to ca. 37 X 13 cm, equilateral, with pinnules to ca. 20 pairs per pinna, to 6 X 1.5 cm, adnate and increasingly decurrent towards pinna apices, slightly reduced at pinna bases; segments entire to deeply serrate, tips acute, margins eciliate; veins mostly simple, ending before the margins; indument on costae and costules abaxially of scales similar to those of rachises, but smaller and less dense; laminae between veins glabrous on both sides; sori medial, indusiate, indusia persistent, tan with slightly darker centers, erose to glandular-ciliate on margins.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 35261, DS).A
Distribución
México (país) EndémicoA
Elevación
1300 mA
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This is closely related to C. melanosticta, differing by the densely scaly stipes and by the less distinctly bicolored indusia.A