Herbs. Stem solitary, ascending, 40-60 cm, apex sometimes flexuous, sparsely fine floccose-setose, leafless toward base. Petiole slender, 3.5-9 cm; leaf blade ovate to subcircular, 10-12 × 6-8 cm, papery, adaxially sparsely finely tawny pilose, abaxially sparsely golden glandular, gray-green, finely tawny setose on veins, base broadly cuneate to shallowly cordate, margin irregularly crenate, apex acute. Verticillasters (2-)10-18-flowered, subglobose, ca. 2.5 cm in diam. before anthesis; bracteoles linear, 2-7 × 0.8 mm. Pedicel short to obsolete. Calyx tubular, 1-1.2 cm, papery, veins finely tawny setose, conspicuously 10-veined, throat and teeth puberulent; teeth narrowly triangular, ca. 3 × 1.3 mm, bristlelike-acuminate. Corolla white, purple spotted on throat, ca. 1.8 cm; tube erect, cylindric or slightly dilated at throat, sparsely pilose, obliquely hairy annulate inside; upper lip oblong, slightly concave, entire, densely pilose outside; middle lobe of lower lip trapeziform, margin undulate, pilose in center outside; lateral lobes ovate. Ovary glabrous. Fl. Jun-Jul.
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