Shrubs; stems quadrangular, at least the upper portion densely gray-pilose, the hairs spreading, up to 2 mm. long; leaf blades oblong-elliptic, up to 17 cm. long and 5.5 cm. wide, obscurely short-acuminate (the tip itself obtuse or rounded), narrowed at base and decurrent on the petiole, moderately firm, entire or undulate, ciliate, both surfaces pilose, the hairs ascending, up to 2 mm. long, the costa and lateral veins (7 or 8 pairs) rather prominent beneath but obscure above, the cystoliths minute and scattered; spikes solitary or paired, terminal and subterminal, up to 4 cm. long and 12 to 17 mm. broad; peduncles up to 5 mm. long, these and the rachises densely pilose; bracts quad- rifarious, those of the dorsal ranks ovate, 10 or 11 mm. long and 8 mm. wide, subacute, narrowed or rounded and more or less oblique at base, ciliate with hairs more or less spreading and up to 1.5 mm. long, their upper faces evenly pilose with ascending hairs mostly 0.5 to 1 mm.  long, the ventral bracts elliptic, 10 or 11 mm. long, 4.5 mm. wide, acute at both ends, ciliate, their faces puberulous with hairs up to 0.16 mm. long or those on the costa and lateral veins somewhat longer (0.5 to 1 mm. long); bractlets linear, 8 mm. long, 0.5 mm. wide, ciliate, the flat surfaces glabrous or more or less pilose dorsally; calyx seg- ments 5, linear-lanceolate, 5.5 mm. long, 0.75 mm. wide near the base, gradually narrowed into a slender tip, puberulent, the costa rather prominent; corolla white, about 2 cm. long, the lower half glabrous, the upper half finely pubescent, the tube 2.5 mm. broad near base, 3.5 mm. broad at throat, the upper lip erect, triangular, 3.5 mm. wide at base, narrowed to an obtuse slightly emarginate tip, the lower lip ovate, about 1 cm. long and 6.5 mm. wide at middle, rounded and 3-lobed at tip, the lobes ovate, 1 mm. long, 1.25 mm. wide at base; stamens slightly exserted beyond the mouth of the corolla tube, glabrous, the anthers 3 mm. long, the lobes superposed, nearly vertical, the connective slender, about 0.5 mm. long and 0.2 mm. wide, the lower anther cell spurred, the spur 0.25 mm. long, rounded at tip; capsules clavate, pubescent, 7.5 mm. long, the fruiting portion about 3 mm. wide and thick, the lower half solid, 1 mm. wide near base of stipe, 2 mm. wide at base of seed-bearing cavity; retinacula 1.75 mm. long, the tip thin, subcucullate, rounded and more or less erose; seeds lenticular, about 2.5 mm. in diameter, glabrous.
Type in the U. S. National Herbarium, No. 2124632, collected on the Cerro Isibukuri, along the Río Kananarí, Comisaría of Vaupés, Colombia, 250 to 700 meters altitude, August 4, 1951, by Richard Evans Schultes and Isidoro Cabrera (No. 13322). Isotype: US.