Herbs perennial. Stems erect, 50-80 cm, yellowish brown, angles densely retrorse puberulent. Petiole 1-3 cm; leaf blade elliptic to oblong, 6-15 × 2.5-4.5 cm, thin papery, adaxially sparsely pilose, densely so on veins, abaxially sparsely yellowish glandular, sparsely pubescent on veins, base abruptly attenuate, margin crenate-serrate, apex acuminate, lateral veins 4-or 5-paired. Panicles terminal and axillary, 10-20 cm, densely gray puberulent; cymes pedunculate, 3-5-flowered; lower floral leaves sessile, upper bractlike, linear, to 5 mm. Calyx campanulate, to 4 mm, pubescent, 2-lipped to middle or below; upper teeth triangular-acuminate, lower teeth narrowly triangular; fruiting calyx dilated to ca. 6 mm. Corolla gray or reddish, to 1 cm, puberulent, tube ca. 5 mm, upper lip ca. 3 mm, lower lip ca. 5 mm. Stamens slightly exserted. Style exserted. Nutlets brown, ovoid, ca. 1.5 mm, glabrous. Fl. and fr. Aug.
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