Monographs Details: Trichomanes capillaceum L.
Authority: Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
Family:Hymenophyllaceae
Description:Species Description - Rhizome long-creeping, filiform, ca. 0.2 mm in diam., bearing rather numerous brown hairlike rhizoids. Fronds numerous, close or distant but usually closely aggregated by intertwining of the rhizomes, mostly 5-11 cm long; stipes 1-5 cm long, terete and not winged, glabrous. Blades lanceolate, ovate, or oblanceolate, 4-9 cm long, 1-3.5 cm broad, 3- to 4-pinnate, unevenly obtuse at apex, narrowed or attenuate at base, glabrous throughout; rhachis and primary costae not winged; costules narrowly winged toward distal end; ultimate segments narrowly cuneiform, 0.1-0.3 mm broad at the emarginate apex; tissue light green, thinly membranous but somewhat stiff in texture. Sori usually one per pinna (rarely more), terminating proximal segments, usually stalked and free from the leaf tissue; involucre narrowly funnelform, about twice as long as broad, the flaring mouth undulate but not 2-lipped nor darkmarginate; receptacle long-exserted; spores subglobose, densely granular.

Discussion:

Lectotype. Plumier, Traite foug. Amer., t. 99-D, based on a plant collected by Plumier "en venant de la Bande du Sud a Leogane," Haiti (designated by Proctor, 1985).

Syn. Trichomanes tenellum Hedwig, Fil. gen. sp., ad 6, text &figs. 1, la, lb. 1799. (Lectotype. The cited Hedwig figs.; however, an authentic specimen from Jamaica exists at Fl, photo US.)

Trichomanes trichoideum Swartz, J. Bot, (Schrader) 1800(2): 98. 1802, (A renaming of T. tenellum Hedwig, cited by Swartz as pusillum in error.)

Trichomanes trichodes Swartz, Fl. Ind. occid. 3: 1741. 1806. (A renaming of T. trichoideum Swartz.)

Vandenboschia capillacea (Linnaeus) Copeland, Philipp. J. Sci. 67: 53. 1938

Distribution:West Indies| Mexico North America| Central America| Colombia South America| Ecuador South America| Peru South America| Venezuela South America|