Plants 1-2 m tall. Branches cylindric, brown, striate, subglabrous, dusty tomentose when young, gray-brown. Petiole 2-6 mm; leaf blade oblong-elliptic to obovate-elliptic, 4-9.5 × 1.3-4 cm, papery, adaxially glabrous, abaxially sparsely stellate, subglabrescent except on veins, with scattered yellow glands, base cuneate or rarely ± cordate, margin irregularly serrate, apex acute to short acuminate. Spikes cylindric, 6-35 × 1.5 cm, densely white stellate-tomentose; verticillasters 6-10-flowered; bracts decussate, 4-6 × ca. 5 mm, apex subacuminate, glabrous or sometimes adaxially sparsely stellate. Calyx teeth triangular-ovate, apex acute. Corolla rose to purple-red, 5-6 mm; tube nearly included, ca. 3 mm, glabrous outside; upper lip circular-ovate, ca. 1 mm; lower lip spreading or erect-patent, middle lobe concave, ca. 2 mm. Nutlets ca. 3 mm; beak recurved, ca. 1.5 mm. Fl. Aug-Oct, fr. Nov.
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