Herbs perennial. Stems 60-100 cm, base spreading hispid, apex sometimes short glandular hairy. Petiole 0.8-5.8 cm; leaf blade ovate-cordate to triangular-ovate, 2.5-7.2 × 2-6 cm, much reduced on branches, adaxially brownish finely strigose, abaxially densely tawny, appressed hispidulous on veins, base cordate to truncate-cuneate, margin coarsely mucronate crenate-dentate, apex short caudate-acuminate. Cymes 2-7-flowered, axillary or in terminal panicles; peduncle 0.3-2.3 cm; bracts slightly shorter than calyx. Calyx ca. 8 × 2.5 mm, sparsely minutely hispid, short glandular hairy; teeth triangular-subulate, posterior tooth ca. 4 mm, anterior teeth ca. 3 mm; fruiting calyx dilated, netted. Corolla yellowish or white, ca. 3.3 cm, puberulent on back outside, throat 5.2 mm wide; upper lip ca. 9 mm; lower lip subequal to upper, elliptic; middle lobe oblong, ca. 4 × 2 mm; lateral lobes smaller, triangular. Nutlets black-brown, triquetrous, obovoid, ca. 2 × 1.2 mm, glabrous, base acute. Fl. Aug-Sep, fr. Oct.
Home