Monographs Details: Adiantopsis paupercula Fée
Authority: Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
Family:Pteridaceae
Description:Species Description - Rhizome short, curved-decumbent, the apex clothed with rigid, lance-acicular scales mostly 2.5-3.5 mm long, these bicolorous with a black central stripe and brown margins. Fronds closely and stiflily clustered, (10-)20-70 cm long, longstipitate, the stipes longer than the blades; texture stiflf and brittle. Blades deltate-ovate, (5-) 10-30 cm long, 4-25 cm broad, (2-)3- to 4-pinnate at base, gradually less divided distally, the linear apex 1-pinnate; pinnae distant, stalked, spreading, the basal ones the largest, these deltate, up to 15 cm long and 6 cm broad, inequilateral (much wider on basiscopic side); middle and upper pinnae similar but gradually smaller; ultimate pinnules obliquely roundish-ovate to elliptical-oval, 3-6 mm long, 2-4 mm broad, articulate to short, dark, lustrous stalks, ultimately deciduous; tissue dull light green, stiflf; veins obscure, ffabellate from base of pinnule. Sori 1-5 per pinnule; indusium broadly reniform, thin, subhyaline.

Discussion:

Basionym. Adiantum pauperculum Kunze, Farmkrauter 2: 65, /. 727. 1850.

Type. Linden 1864, from Mt. Libano, Oriente, Cuba (LZ, destroyed; isotypes B M , US).

Syn. Hypolepis paupercula (Kunze) Hooker, Sp. fil. 2: 73, ^ 88-C. 1856.

Cheilanthes paupercula (Kunze) Mettenius, Fil. hort, bot. Lips. 52. 1856.

Distribution:Cuba South America| Jamaica South America| Puerto Rico South America|