Herbs perennial. Rhizomes trailing, rooting from internodes. Stems dark purple, erect, 30-60 cm tall, with antrorsely pubescent hairs on angles, otherwise subglabrous. Petiole 1-4 mm; leaf blade of basal leaves circular to ovate, base subcordate, apex acute; blade of upper leaves ovate-lanceolate to lanceolate, 4-8 × 1.5-3.5 cm papery, glabrous, finely pubescent along veins, base roundish to shallowly cordate, margin remotely undulate-denticulate, apex caudate to caudate-acuminate, abaxially sometimes slightly purplish, veins finely pubescent. Racemes secund, terminal, 8-10 cm; peduncle 2-3 cm; bracts sessile, narrowly lanceolate, 1-1.5 mm, glabrous, deciduous. Pedicel ca. 3 mm, densely pubescent, glandular puberulent. Calyx ca. 2.5 mm, densely pubescent, glandular puberulent; scutellum spreading, ca. 1.7 mm. Corolla white with red to purple on limb, 1.7-1.9 cm, puberulent outside; tube bent at base, to 5 mm wide at throat, sparsely pilose at bent base inside; middle lobe of lower lip triangular-ovate, base ca. 4 mm wide, apex emarginate; lateral lobes ovate, ca. 2 mm wide. Nutlets unknown. Fl. Apr-May.
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