Plants perennial. Stems erect, 30-50 cm, densely retrorse white villous, glandular hairy. Leaves 3-5-foliolate; petiole 4-13 cm, terminal petiolule (1-)2-4 cm, lateral petiolules 0.1-1(-2) cm, glandular pilose; terminal leaflet broadly ovate, (2.5-)6-11 × (2-)5-7 cm, white strigose, abaxially sometimes purple-green, base cordate to subcordate, margin irregularly crenulate, pilose, apex acute; lateral leaflets 1-2 (-4.5) × 0.8-1.5(-3) cm. Verticillasters 8-to many flowered, widely spaced, in racemes or panicles, glandular hairy. Pedicel 2-4 mm, pubescent. Calyx tubular, 6.5-7 mm, glandular pilose; upper lip obtusely triangular, ca. 1 × 3-3.5 mm; lower lip ca. 1.5 mm, teeth triangular. Corolla yellowish, 1.5-1.6 cm, apex pubescent outside; tube tubular, somewhat exserted, 6-7(-8) mm, ca. 1.5 mm wide at base, ca. 3.5 mm wide at throat, pilose annulate at middle; upper lip oblong lanceolate, 5-6(-7) × ca. 2 mm; lower lip spreading, 8-9 × 4 mm; middle lobe ca. 7.5 × 4-6 mm, base attenuate, gradually wider toward apex, strongly 2-lobulate, Y-shaped. Filaments ca. 2 mm; anthers ca. 2.5 mm, connectives ca. 1.6 cm, wider, upper arms ca. 1.1 cm, lower arms abortive. Nutlets dark brown, oblong, ca. 2 mm. Fl. May-Jun.
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