Branching herbs up to 20 cm. high, ascending, rooting at the lower nodes; stems subquadrangular, puberulous, the hairs retrorsely curved, up to 0.16 mm. long; leaf blades ovate to elliptic, up to 8 cm. long and 4 cm. wide, obtuse at tip, narrowed at base and decurrent on the petiole, moderately firm, entire or undulate, the costa and lateral veins (8 pairs) puberulous, the hairs similar to those on the stems, the intercostal areas essentially glabrous or minutely hirtellous toward the margins with narrowly triangular septate hairs, the venation rather obscure, at least not prominent, the cystoliths lacking; petioles up to 1.5 cm. long, puberulous; spikes terminating the branches form- ing poorly defined leafy panicles, the spikes themselves narrowly ovoid, up to 5 cm. long and 1.5 to 2 cm. broad, the rachis puberulous; bracts ovate to elliptic, 1 to 1.5 cm. long, 6 to 10 mm. wide, acute, narrowed at base, the flat surfaces sparingly puberulous, the margins ciliate with spreading or ascending hairs up to 1.5 mm. long, pinnately veined, the veinlets coarsely reticulate; bractlets linear-lanceolate, 9 mm. long, 1 mm. wide, ciliate with hairs up to 1 mm. long, the flat surfaces essentially glabrous; calyx 5 mm. long, the segments 5, linear-lanceolate, 4.5 mm. long, 0.5 mm. wide at base, narrowed to a slender tip, the upper part hirtellous (the hairs at tip up to 0.25 mm. long), the lower portion glabrous; corolla white, about 2 cm. long, glabrous except the lips, these minutely hirtellous, the tube 2 mm. broad near the base, about 4.5 mm. broad at throat, the upper lip erect, ovate-lanceolate, 4 mm. long and 2 mm. wide at base, obtuse and emarginate at tip, the lower lip more or less spreading, ovate, 7 mm. long, 6 mm. wide at base of lobes, these 4 mm. long, the middle one ovate, 4 mm. wide at base, the lateral ones triangular, 2.5 mm. wide at base, all three lobes obtuse at tip; stamens glabrous, slightly exserted beyond the mouth of the corolla tube, the anther cells 1.5 mm. long and 0.25 mm. wide, superposed, vertical, about 0.5 mm. apart, the upper one on a short slender stalk about 5 mm. long, the connec- tive 0.25 mm. wide; style as long as the stamens, the stigma 2-lobed, the lobes lanceolate, slightly recurved, 0.75 mm, long, 0.25 mm. wide; top of ovary and the base of the style sparingly hirtellous, the hairs straight, ascending or spreading, up to 0.8 mm. long; capsules not seen. Type in the U. S. National Herbarium, No. 2124630, collected at Soratama, along the Río Apaporis, between Río Pacoa and Río Kananarí, about 250 meters altitude, June 20, 1951, by Richard Evans Schultes and Isidoro Cabrera (No. 12701). Schultes and Cabrera's No. 12679 (US), collected on a flood bank on the same date and in the same general region as the type, is also of this species.