Herbs up to 30 cm. high; stems erect or ascending, subhexagonal, glabrous or moderately puberulous, the hairs curved; leaf blades oblong-lanceolate to oblong-ovate, subacuminate (the tip itself obtuse), narrowed at base, thin to moderately firm, entire or undulate, both surfaces glabrous or the costa and lateral veins (5 or 6 pairs) sparingly and minutely hirtellous, the cystoliths conspicuous under a lens, about 0.5 mm. long, crowded and parallel on costa of the upper surface; petioles up to 4.5 cm. long, glabrous or sparingly hirtellous; cymes solitary or in pairs, axillary, mostly 3-parted, the peduncles from base to node up to 2 cm. long, from node to cymules, up to 2.2 cm. long, subhexagonal, slightly flattened, glabrous or sparingly hirtellous, the hairs more or less curved, the cystoliths prominent under a lens; bracts subtending the cymes subulate or sometimes narrowly lanceo- late, up to 4 mm. long, glabrous or sparingly hirtellous; cymule bracts suborbicular, up to 13 cm. long and wide, the posterior bract about 2 mm. longer and wider than the anterior bract, both bracts rounded and subapiculate at tip, cordate at base, thin, green (or in a small basal area whitish), glabrous or sparingly ciliatae, the costa rather prom- inent, the lateral veins and reticulations of the veinlets rather obscure, the cystoliths prominent under a lens; flowers several, subsessile, the subtending bracts lanceolate, 2.25 mm. long, 0.75 mm. wide, acuminate, subhyaline, glabrous or sparingly ciliolate; calyx 2.25 mm. long, whitish, subhyaline, minutely hirtellous except the glabrous basal portion, the hairs ascending, the calyx segments triangular, 1.25 mm. long, about 0.5 mm. wide at base, acute; corolla 15 to 20 mm. long, rosy, moderately hirtellous (the basal portion glabrous), the hairs retrorse, up to 250μ long, the corolla tube 2 mm. broad at base, nar- rowed at 2 mm. above base to 1 mm., the mouth 2.5 mm. broad, the upper lip ovate, about 1 cm. long and 6 mm. wide, rounded at tip, the lower lip oblong, up to 11 mm. long, and 2.5 mm. wide, 3-lobed at tip, the lobes rounded, about 0.5 mm. long and broad; stamens barely reaching tip of the upper corolla lip, the anther lobes super- posed, about 1 mm. long and 0.5 mm. wide, the filaments flattened, glabrous at tip, sparingly pilose toward base; style slightly shorter than the stamens, the stigma bilobed, the lobes linear, obtuse, about 0.5 mm. long; ovary glabrous or very sparingly hirtellous, the basal disk oblique, about 0.5 mm. long; capsules not seen. Type in the U. S. National Herbarium, No. 703911, collected along stream in damp woods, near Cacagualito, vicinity of Santa Marta, Department of Magdalena, Colombia, "1500 feet" altitude, December 1898, by H. H. Smith (No. 1411). Isotypes: GH, K, Mo, NY, S. Dicliptera sanctae-martae, when compared with other Colombian species, is well marked by its small suborbicular cordate cymule bracts. According to Smith, it was not observed anywhere except in the type locality.