Monographs Details:
Authority:
Acevedo-Rodríguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Acevedo-Rodríguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Family:
Aspleniaceae
Aspleniaceae
Description:
Species Description - Terrestrial fern to 20 cm tall. Rhizome short, erect, 2-5 mm thick, with apical tuft of iridescent, gray-brown to blackish, linearattenuate 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 3-lobed or 3-parted, the largest ones broadly pentagonal (to 9 cm broad), with 2-4 pairs of lateral pinnae and a triangular-acuminate, lobed apical one; lowest pinnae unequally triangular, coarsely lobed, 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 to 10 mm long; indusium whitish-translucent with minutely ciliate margin.
Species Description - Terrestrial fern to 20 cm tall. Rhizome short, erect, 2-5 mm thick, with apical tuft of iridescent, gray-brown to blackish, linearattenuate 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 3-lobed or 3-parted, the largest ones broadly pentagonal (to 9 cm broad), with 2-4 pairs of lateral pinnae and a triangular-acuminate, lobed apical one; lowest pinnae unequally triangular, coarsely lobed, 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 to 10 mm long; indusium whitish-translucent with minutely ciliate margin.
Discussion:
Asplenium anthriscifolium Jacq., Collectanea 2: 103, t. 2, fig. 3, 4. 1788 [17891. Asplenium pumilum var. anthriscifolium (Jacq.) Wherry, South. Fern Guide 346. 1964.
Distribution:
Africa| Brazil South America| Peru South America| México Mexico North America| Trinidad and Tobago South America| West Indies| Florida United States of America North America| Saint Thomas Virgin Islands of the United States South America| Saint John Virgin Islands of the United States South America|
Africa| Brazil South America| Peru South America| México Mexico North America| Trinidad and Tobago South America| West Indies| Florida United States of America North America| Saint Thomas Virgin Islands of the United States South America| Saint John Virgin Islands of the United States South America|