Herbs to 1 m tall. Stems 4-angled, sulcate, pubescent. Petiole 2-5 mm; leaf blade ovate to lanceolate-ovate, (0.5-)1.5-3 × (0.3-)0.5-1.8 cm, thickly papery, both surfaces hispid, secondary veins 3-5 on each side of midvein, base broadly cuneate to subrounded, margin entire, apex acute. Spikes axillary, ca. 1 cm, (1-)3-5-flowered; bracts shortly petiolate, circular to subcircular, 2-5 mm in diam.; bracteoles small or absent. Calyx ca. 4.5 mm, hispid, 5-lobed almost to base; lobes linear-lanceolate. Corolla white, ca. 6 mm, outside densely pubescent; tube slightly enlarged; lower lip spreading, apex 3-lobed; upper lip erect, triangular and concave, apex emarginate. Staminal filaments ca. 2.5 mm; anther thecae superposed, lower one spurred at base. Ovary glabrous; style ca. 3 mm, glabrous. Capsule obovoid, ca. 6 mm, glabrous, 4-seeded. Seeds broadly ovate in outline, ca. 0.6 × 0.6 mm, compressed, verrucose. Fl. Jul-Nov, fr. Oct-Jan.
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