Plants perennial. Stems erect, ca. 40 cm, purple-brown, densely glandular pubescent. Basal leaves numerous; petiole 5-14 cm, narrowly winged; blade ovate-hastate, 3.5-6 × 1.5-4.5 cm, adaxially glabrescent, abaxially densely gray tomentose, base cordate to subhastate, cuneate-decurrent, margin irregularly crenulate, apex obtuse to acute; stem leaf petioles 0.5-5 cm, blade gradually reduced toward apex, ovate to ovate-hastate, 1-3 × 0.8-1.5 cm. Verticillasters 2-4-flowered, widely spaced, in loose raceme-panicles; rachis densely glandular pubescent; bracts ovate to oblong, 4-7 mm. Pedicel 3-5 mm, densely glandular pubescent. Calyx campanulate, purple, ca. 1.1 cm, finely pilose; upper lip broadly triangular, ca. 3 × 7 mm; lower lip ca. 5 × 8 mm, teeth triangular, apical spine less than 1 mm; fruiting calyx slightly enlarged, papery. Corolla yellowish, ca. 2 cm, white villous; tube pilose annulate inside, ca. 1.6 cm, gradually dilated adaxially, ca. 9 mm wide at throat; upper lip ca. 4 × 5 mm; lower lip ca. 5 × 13 mm, middle lobe ca. 4 × 8 mm, flabellate, emarginate; lateral lobes to 4 mm wide. Filaments ca. 7 mm; connectives arcuate, ca. 1.8 mm, upper arms ca. 0.8 mm, lower arms ca. 1 mm. Nutlets yellow-brown, globose, ca. 2 mm in diam., glabrous. Fl. Jul-Aug.
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