Herb, sometimes suffrutescent with vinelike stems; stems subterete, glabrous to puberulous along one line. Leaves ovate, to 6.5 cm long, 2.5 cm wide, apically acuminate, basally obtuse to rounded, glabrous, the cystoliths numerous but ob-scure, the margins entire to undulate; petioles short, 3-5 mm long, pubescent as on the stem. Inflorescences in axillary spikes borne singly or in pairs, the spikes compact to 6 cm long, 1.5 cm wide, the rachis puberulous; bracts imbricate, elliptic to obovate, to 8 mm long, 4 mm wide, apically acute to obtuse, pu-berulous, ciliolate; bracteoles narrowly elliptic to oblanceolate, to 8 mm long, 2 mm wide, puberulous, ciliolate. Flowers with 5-merous calyx, the segments lanceolate, to 8 mm long, 2 mm wide, puberulous; corolla white, to 6 cm long, puberulous, the tube narrowly funnelform, to 4 cm long, 3 mm wide basally, narrowing above the ovary, expanding to 6 mm wide at the mouth, the upper lip erect, to 2 cm long, 10 mm wide, minutely bidentate apically, the lower lip spreading, ca. 18 mm long, 3-lobed, the lobes oblong, 10 mm long, apically rounded, the middle lobe 7 mm wide, the lateral lobes 5 mm wide; stamens exserted to the tip of the upper lip, the filaments glabrous, the anther cells superposed, connective 3.5 mm wide, the upper cell 4 mm long, basally acute, the lower cell 3 mm long, basally ending in a blunt tip; ovary glabrous. Capsules not observed.
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