(Sw.) J. Sm., Bot. Mag. 72, comp. 36.1846
Terrestrial, to 1.5 m tall; rhizomes stout, erect, with long, thin, reddish-brown, lanceolate-linear scales, the scales becoming less dense along petiole, rachis, and sometimes midrib of leaflets. Leaves 1-pinnate; petioles much shorter than rachis, ridged; rachis densely short-pubescent; leaflets oblong-linear, acuminate, inequilateral at base with the upper proximal edge usually truncate and the lower proximal edge cordate-auriculate and overlapping rachis, 3-15 cm long, 1-2.2 cm wide, entire or minutely and sharply serrate near apex. Sori round, scattered in 2 or 3 irregular rows on each side of midrib below. Croat 4287.
Common in the forest.
Guatemala to Peru, Bolivia, and Brazil; West Indies. In Panama, known principally from tropical moist forest in the Canal Zone, Bocas del Toro, Chiriqui, Veraguas, Los Santos, Panama, and Darien, but known also from premontane wet forest in Chiriqui and Panama and from tropical wet forest in Colón.
See Fig. 21.