Plants perennial. Stems to 45 cm, sparsely pilose. Leaves mostly basal, long petiolate; petiole 3-17 cm, finely strigose; leaf blade oblong-hastate to ovate-cordate, 3.5-9.5 × 2-5.3 cm, adaxially finely strigose, abaxially densely strigose, dark purple glandular, base cordate or subhastate, margin crenate, apex obtuse. Verticillasters 2-6-flowered, in terminal racemes; rachis densely villous; bracts elliptic to obovate, 1.2-2.3 × 0.4-1 cm, margin entire, apex mucronate, abaxially purple veined. Pedicel to 7 mm, densely villous. Calyx campanulate, 1.6-1.9 cm, villous especially on veins, purple glandular; upper lip semicircular, 6 × 10 mm, short 3-tipped; lower lip as long as upper, teeth triangular, apex acute. Corolla red or violet, 4-5 cm, villous outside; tube 4-6 cm, pilose annulate at base inside, suberect or projected from calyx, ca. 4 mm wide at base, to 1.4 cm wide beyond middle; upper lip oblong, ca. 11 × 8 mm, slightly arcuate; lower lip longer than upper, middle lobe obcordate, ca. 7 × 1.3 mm; lateral lobes ovate, ca. 5 mm wide. Filaments ca. 8 mm; connectives arcuate, ca. 5.5 mm, arms equal. Style exserted. Nutlets yellow-brown, obovoid, ca. 3 mm, apex rounded. Fl. Jul-Sep.
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