Flora of Barro Colorado Island

Asplenium auritum

(Hook.f.) Mort. & Lell., Mem. New York Bot. Gard.15:19.1966

Epiphyte, to 35 cm tall. Leaves 1-pinnate, glabrous; leaf­lets oblong, reduced above and tapered to a narrowly rounded apex, usually with a small auricle on upper side near base, to 3 cm long, less than 1 cm wide, the margins finely and ± irregularly serrate or the proximal one-fourth of the lower edge entire, the veins mostly 1- or 2­-forked. Sori several, oblong, 2-5 mm long, along upper edge of lateral veins, sometimes also on auricle, sharply oblique to midrib; indusium ± lunate, thin. Croat 11293.

Uncommon, on trees (seen mostly near the ground) or on rocks, within the forest.

Throughout much of tropical America. In Panama, known from tropical moist forest in the Canal Zone, Bocas del Toro, Panama, and Darien, from premontane wet forest in Chiriqui, Coclé, and Panama, from tropical wet forest in Colon, Chiriqui, and Darien, and from lower montane wet and lower montane rain forests in Chiriqui.