Herbs rhizomatous. Stems erect to prostrate-ascending, 12-35 cm tall, glabrous to sparsely pilose upward, branched. Leaves gradually reduced and narrower upward; petiole 4-14 mm, 1.2-3 cm basally, subglabrous or densely pilose; leaf blade circular-ovate to narrowly ovate, broadly ovate-orbicular to subreniform basally, 0.7-1.7 × 0.7-2.6 cm, herbaceous, sparsely appressed pilose, base cordate to subtruncate, margin coarsely 4-6-crenate, apex obtuse to rounded. Flowers terminal or axillary, erect, becoming pendent. Pedicel 2-4 mm, finely glandular pilose. Calyx ca. 3 mm, pilose outside, glandular pilose, to 4 mm in fruit; scutellum ca. 0.6 mm, ca. 2 mm in fruit. Corolla purple with white on throat, ca. 5 mm, sparsely pubescent outside, adaxially puberulent on base; tube erect, slightly dilated in front, gradually dilated to ca. 2 mm wide at throat; upper lip erect, circular, apex emarginate; lower lip spreading downward; middle lobe semicircular, ca. 1.2 × 2.2 mm; lateral lobes oblong-ovate, almost entirely adnate to upper lip. Nutlets orange-brown, oblate, ca. 2 mm in diam. including wing, abaxially densely tuberculate, with a cylindrical umbo near middle, densely spiny around umbo on adaxial side, equatorial plane circumvented by a wing ca. 0.5 mm wide, margin irregularly comblike.
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