Herbs perennial. Stems 30-40 cm, retrorse puberulent. Petiole 0.5-2.5 cm, longer basally, shorter upward, retrorse puberulent; leaf blade ovate to oblong-ovate, 2-3.5 × 1-2 cm, puberulent, abaxially intermixed with yellowish glands, base truncate-cordate to shallowly cordate, margin crenate, apex obtuse. Verticillasters 1-5-flowered, short pedunculate or sessile; bracts linear, ca. 6 × less than 1 mm, finely white strigose. Calyx tubular, ca. 1 cm, white strigose, glandular puberulent, glabrous inside; tube 5-6 mm, throat oblique; teeth of upper lip oblong-lanceolate, apex acute; teeth of lower lip recurved, triangular-lanceolate. Corolla purple-blue, 2.4-2.8 cm, pilose, glabrous inside; tube 2-2.3 cm, abruptly dilated on apical 2/5; upper lip 2-lobed, lobes to 1/2 its length; middle lobe of lower lip inversely cordate. Fl. Jul.
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