Herbs rhizomatous perennials. Stems 15-25 cm tall, ca. 1.5 mm in diam. at base, much branched basally, densely upward curved to finely subpatent-pilose. Petiole 2.7-7 mm, densely and finely antrorse pilose; leaf blade triangular, 0.7-1.7 × 0.8-1.8 cm, herbaceous, adaxially sparsely strigose, abaxially very sparsely so, ciliolate, base broadly cuneate to subtruncate, margin shallowly 4-or 5-crenate, apex obtuse to acute. Racemes terminal, 2.5-10 cm; peduncle 1-2 cm; bracts sessile, rhombic-ovate, ca. 2 × 1.5 mm, finely pilose, glandular, deciduous. Pedicel ca. 2.5 mm, glandular pilose. Calyx ca. 1.5 mm, to 3 mm in fruit, finely glandular pilose; scutellum ca. 0.5 mm, to 1 mm in fruit. Corolla rose to blue, base whitish, ca. 8 mm, glandular puberulent outside, subglabrous inside; tube slightly saccate at base, to 1.5 mm wide at throat; middle lobe of lower lip circular-ovate, to 5 mm wide, apex emarginate; lateral lobes ovate, ca. 0.8 mm wide. Nutlets brown, ellipsoid-ovoid, ca. 1.5 × 1 mm, tuberculate, adaxially umbonate at middle. Fl. May, fr. Jun-Sep.
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