Herbs or suffrutescent plants probably up to 1 m. high or more (only tips available for study); stems subquadrangular, glabrous or bifariously pilose in the nodal region, the hairs more or less spreading, up to 1 mm. long, septate; leaf blades ovate or rhombic-ovate, up to 12 cm. long and 5 cm. wide near middle, gradually narrowed to a short-subacuminate tip (the tip itself subobtuse) cuneate at base, moderately firm, entire or undulate, the upper surface conspicuously pilose, the hairs flaccid, ascending, up to 1 mm. long, septate, pilose on the costa and lateral veins (about 12 pairs), the cystoliths up to 0.144 mm. long, those of the upper surface black and inconspicuous, of the lower surface white, numerous and very conspicuous under a lens; petioles up to 3 cm. long, 1 mm. thick, the lower surface glabrous, the channels more or less pilose; panicles purple, up to 30 cm. long and 5 cm. broad, moderately dense, the lower branches subtended by typical stem leaves, the upper by deltoid-ovate leaf-like sessile bracts, rounded at tip, the lowermost of these about 4 mm. long and 2.5 mm.  wide, the others successively smaller, all glabrous or sparingly hirtel- lous, the ultimate bracts triangular, about 3 mm. long and 1 mm. wide at base, subacute; rachis and rachilla glabrous or bearing a few scattered hairs up to 0.32 mm. long, these ascending and septate; pedicels erect, up to 2 mm. long, glabrous, ascending; calyx 5 mm. long, glabrous or bearing a few acute hairs up to 0.16 mm. long on the outer surface, the inner surfaces glandular; corolla purple, glab- rous, up to 23 mm. long, the tube up to 10 mm. long, about 2 mm. broad at base, enlarged to 2.5 mm. at 2 mm. above base, narrowed to 2 mm. at 4 mm. above base, thence enlarged to 3 mm. at mouth, the upper lip erect, 13 mm. long, linear-lanceolate, about 1 mm. wide at base, gradually narrowed to an acute tip, the lower lip spreading, 8 mm. long and wide, conduplicate, the tip 3-lobed, the lobes ovate, about 1 mm. long and wide, obtuse; stamens exserted 15 mm. beyond the mouth of the corolla tube, glabrous, the anthers 4 mm. long and 1.25 mm. thick, muticous at both ends; style exceeding the stamens about 4 cm., the two stigma lobes minute, rounded; ovary glabrous; capsules not seen.  

Type in the U. S. National Herbarium, No. 2124999, collected in Portachuelo, Valley of Sibundoy, Comisaría of Putumayo, Colombia, 2,250-2,400 meters altitude, May 31, 1946, by Richard Evans Schultes and Mardoqueo Villarreal (No. 7740). Isotype: US No. 2125000.