Terrestrial, to 1.3 m tall; rhizome scaleslinear-lanceolate. Leaves 2-pinnate-pinnatifid (sometimes in part3pinnate); petiole and rachis reddish-brown and shiny; pinnaeto 20 cm long, tapering to a long, slender, connivant apex,sometimes narrowly decurrent on rachis to next pinna; largerleaflets ± irregularly toothed to pinnatifid, white-waxybeneath, mostly 5-25 mm long. Sporangia dispersed over lowersurface. Croat 6921.
Locally common in open areas, especially on steep, exposedbanks.
Distinguished by the white underside of the leaves. Mosttropical areas of the New World. In Panama, known principally fromtropical moist forest in the Canal Zone, Bocas del Toro, San Blas,Veraguas, Los Santos, Panama, and Darien; known also frompremontane moist forest in Panama (Panama City), from premontanewet forest in Colón, Chiriqui, and Panama, and from tropicalwet forest in Chiriqui and Panama.