Monographs Details: Hymenophyllum brevifrons Kunze
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 blackish, filiform, much-branched, the fronds scattered but numerous and imbricate, the plants forming mats. Fronds 2-4.5 cm long, the stipes usually much shorter than the blades, marginate to narrowly winged from near the base. Blades ovate-orbicular to ovate or oblong, mostly 1.5-3 cm long, intricately 2-pinnatifid, the ultimate divisions flabellately divided, with closely approximate segments 0.7-1 mm broad. Sori often numerous, terminating many outer segments of apical half of blade, very small, usually not over 1 mm long, the valves pale green and delicately translucent, flat, entire.

Discussion:

Fig. 24.

Type. Leprieur 235, from French Guiana (LZ, destroyed; isotype fragm. NY, US). (Type cited by Kunze in Famkrauter 236. 1847, and iUustrated in that work, t. 96, fig. 2.)

Distribution:Central America| Guyana South America| French Guiana South America|