Monographs Details: Asplenium pumilum Sw.
Authority: Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
Family:Aspleniaceae
Scientific Name:Asplenium pumilum Sw.
Description:Species Description - Rhizome short, erect, 2-5 mm thick, with apical tuft of iridescent, gray-brown to blackish, linear- attenuate scales to 3 mm long with hairlike tips. Fronds seasonal, deciduous, mostly 5-20 cm long; stipes very slender, 1.5-12 cm long, often longer than the blades, sparsely clothed throughout with scattered, minute, whitish, septate hairs. Blades variable, the smaller ones merely 3-lobed or 3-parted, the largest ones (var. anthriscifolia) broadly pentagonal (up to 9 cm broad), with 2-4 pairs of lateral pinnae and a deltate-acuminate, lobed apical one; lowest pinnae unequally deltate (the basal basiscopic division longer than the conesponding acroscopic one), coarsely lobed (the first lobe sometimes free), the other lateral pinnae more or less lanceolate with crenate-dentate margins; tissue delicately herbaceous, with veins very oblique, subpinnately forked. Sori numerous, variable in length up to 10 mm long; indusium whitishtranslucent with minutely ciliate margin.

Discussion:

Type. Swartz, from Jamaica (S, photo US; isotype Herb. Thunb. 24835, UPS).

Syn. Asplenium anthriscifolium Jacquin, Collectanea 2: 103, t. 2, figs. 3, 4. 1788 (1789). (Type. Jacquinl, from Martinique, W , not seen, fragm. BR, not seen.)

Asplenium pumilum var, anthriscifolium (Jacquin) Wherry, South, Fern Guide 346, 1964.

Distribution:United States of America North America| West Indies| Mexico North America| Central America| Colombia South America| Ecuador South America| Peru South America| Brazil South America| Africa|