Herbs. Stems ca. 60 cm tall, base prostrate, yellowish-brown when dry, pilose pubescent, subglabrous at base. Petiole 2-5.2 cm; leaf blade ovate-cordate, 4.5-7.5 × 3-4.5 cm, much reduced on lateral branches, membranous, brown, finely bristly, base cordate, margin mucronate-crenate, apex short acuminate. Cymes 3(-5)-flowered, 5-7 in terminal panicles, or axillary; peduncle 3-6 mm; lower floral leaf blades ovate-cordate, 11-13 × 7-8 mm; bracts 2.5-4 mm. Calyx ca. 8 × 3.5 mm, pilose outside; teeth triangular-ovate, posterior teeth ca. 3 mm, middle tooth largest, anterior teeth ca. 1.5 mm; fruiting calyx with very conspicuous transverse veins. Corolla white, ca. 2.3 cm, glabrous, throat ca. 6 mm wide; upper lip ca. 7 mm; lower lip longer, elliptic, lateral lobes obtuse at apex; middle lobe obovate, ca. 2 × 1.5 mm. Nutlets unknown. Fl. Aug.
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