Herbs perennial. Rhizomes woody. Stems erect, 50-80 cm, few, appressed puberulent, sparsely spreading pilose, lanate-pilose at insertion of verticillasters. Petiole of mid stem leaves 1.5-2.5 cm; leaf blade circular, 4-5 cm in diam., palmately 5-partite almost to base, sparsely puberulent, glandular, base cordate; lobes rhombic, pinnately divided into linear-lanceolate segments. Verticillasters to 2 cm in diam., 12-18-flowered, lanate-pilose, numerous, in spikes 5-10 (-15) cm; floral leaves with petiole 1-2 cm, blade narrowly rhombic, 1-2.5 cm, 3-lobed, lobes entire or dentate; bracteoles spiny, curved upward, slightly shorter than calyx, villous. Calyx obconical, 6-8 mm, lanate-pilose, obscurely veined, tube ca. 5 mm; teeth broadly triangular, apex acute; anterior teeth spreading, ca. 2.5 mm; posterior teeth equal, straight, ca. 1.5 mm. Corolla reddish or purple-red, ca. 1.2 cm, pilose, villous annulate inside; tube ca. 6 mm; upper lip straight, concave, oblong-ovate, margin entire; lower lip horizontally spreading, lobes ovate, middle lobe larger. Immature nutlets yellow-brown, triquetrous, oblong, base cuneate, apex truncate, villous, Fl. Jul-Aug.
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