Herbs perennial. Rootstocks 1.5-13 mm wide. Stems erect, 12-35 cm tall, subglabrous or ± spreading to retrorsely white puberulent except retrorsely pubescent on angles, rarely short branched. Petiole 2.8-9(-12) mm; leaf blade narrowly triangular-ovate to ovate, 1.4-4 × 0.6-1.7 cm, herbaceous, adaxially very sparsely strigose to sparsely puberulent, abaxially sparsely glandular, veins sparsely puberulent to pilose and densely ciliolate, base broadly cuneate to subtruncate or subrounded, margin entire to irregularly, remotely 2-5-shallow-dentate, apex rounded to acute. Racemes terminal, 3-10 cm; bracts purplish, ovate to elliptic, sometimes obovate, 3-8 mm, base cuneate, apex acute, ciliate. Pedicel ca. 2 mm, densely glandular pubescent. Calyx ca. 2.5 mm, densely glandular pubescent outside; scutellum ca. 1 mm. Corolla reddish to purple-blue, 1.8-2.2 cm, glandular pubescent outside, glabrous inside; tube bent near base, gradually dilated upward; middle lobe of lower lip triangular-ovate, ca. 1.1 cm wide, apex emarginate; lateral lobes ovate. Fl. May-Aug.
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