Shrubs; stems subquandrangular, glabrous, the cystoliths minute, brownish, parallel; leaf blades broadly elliptical or ovate, up to 14 cm. long and 8.5 cm. wide, slenderly short-acuminate, short-cuncate (5 mm. long) from a rounded base, thin, entire, sparingly pilose above, sparingly pilosulous beneath, the hairs confined chiefly to costa and lateral veins (about 10 pairs), spreading or ascending, up to 0.48 mm. long, the veinlets coarsely reticulate, these and the costa and lateral veins rather prominent especially beneath, the cystoliths obscure, brownish; petioles up to 4 cm. long and 1.75 mm, thick, glabrous, the cystoliths minute and obscure; flowers ascending, borne in a narrow rather dense panicle up to 26 cm. long or more and 4 cm. broad, the lower branches distant, subtended by small ovate short-petioled (5 mm. long) leaves up to 5 cm. long and 2.5 cm. wide, but in other re- spects similar to the main stem leaves; bracts subtending the flowers 8 min. long and 1.25 mm. wide, the tips subacute, ciliolate and moder- ately hirtellous, the hairs up to 0.2 mm. long, the rachis and rachilla rather densely hirtellous, the hairs more or less spreading, up to 0.46 mm. long; pedicels up to 1 mm. long, hirtellous; calyx segments lance- olate, 5.5 mm. long, 1.25 mm. wide near base, subacute, ciliolate and rather sparingly and minutely hirtellous, the hairs up to 0.16 mm. long, ascending, bearing near tip a few gland-tipped spreading trichomes up to 0.46 mm. long; corolla glabrous, the tube 18 mm. long, 3 mm. broad just above base, narrowed at 8 mm. above base to 2 mm., 5 mm. broad at throat, the upper lip erect, linear, 15 mm. long, 2.25 mm. wide, rounded and entire at tip, obscurely 3-nerved, curled or contorted. when dry, the lower lip spreading, ovate, 11 mm. wide, 3-lobed at tip, the lobes 1 mm. long, the middle one 1.5 mm. wide, the lateral ones about 1 mm. wide, all rounded; stamens exserted 2 cm. beyond mouth of the corolla tube, erect, glabrous; anthers linear, 3.5-4.5 mm. long, about 1 mm. broad; pistil about as long as the stamens, glabrous, the stigma minute; ovary glabrous; capsules not seen. Type in the U. S. National Herbarium, No. 2045391, collected in dense shade along stream on the south slope of Cerro San Pedro, Department of Cauca, Colombia, 2,500 meters altitude, September 10, 1944, by Earl L. Core (No. 1200). Habracanthus corei differs from the majority of the Colombian species in its broadly elliptic leaf blades and the very sharply acu- minate, short-petioled, cordate inflorescence leaves. The color of the corolla is not apparent in the dried material. It was probably some shade of red.