Herbs perennial, rhizomatous. Adventitious roots slightly swollen. Stems to 60 cm tall, ascending-erect, sparsely hirtellous, purplish, much branched. Petiole 0.7-1.5 cm; leaf blade ovate, 1.7-4 × 0.8-2.5 cm, herbaceous, sparsely strigose, base rounded, margin 6-9-crenate-serrate, apex acute. Racemes terminal, 5-13 cm; bracts ± leaflike, rhombic-ovate, 0.6-1.5 cm including petiole, margin 1-or 2-crenate-serrate, apically acute. Pedicel to 4.5-5(-6) mm, hairs glandular. Calyx ca. 3.5 mm, to 4 mm in fruit, densely glandular puberulent; scutellum ca. 2 mm, to 4 mm in fruit. Corolla rose to purplish, (2-)2.6-2.9 cm, glandular puberulent outside, glabrous except for sparsely puberulent throat inside; tube nearly straight, base slightly bent, throat to 5 mm wide; middle lobe of lower lip triangular-ovate, to 6 mm wide, base constricted, apex emarginate; lateral lobes ovate, ca. 2.5 mm wide. Nutlets unknown. Fl. May-Dec.
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