Plants perennial. Rhizome prostrate, ca. 1 cm in diam. Stems 1 to few, tufted, erect, 50-100 cm, branched toward apex, retrorse pilose. Petiole 1-6.5 cm, pilose, terminal petiolule 2-4.3 cm, lateral petiolules 5-12 mm; stem leaves (3-)5(-7)-foliolate; leaflets ovate, 1.3-7.5 × 0.9-3.5 cm, pilose to subglabrous, margin crenate. Inflorescence glandular pilose; verticillasters 4-6-flowered, widely spaced. Pedicel 4(-6) mm. Calyx tubular, 1-1.4 cm, glandular pilose, throat densely white hirsute; upper lip triangular, ca. 3 × 4 mm; lower lip nearly as long as upper, teeth triangular, apex acute. Corolla yellowish, yellow, to purple-red, 2-2.5 cm, sparsely glandular pilose, densely glandular pilose on upper lip; tube villous inside, slightly exserted, ca. 12 × 3 mm wide at base, 6-7(-8) mm wide at throat; upper lip folded-falcate, nearly at a right angle to lower lip; lower lip spreading, oblong, ca. 12 × 6 mm; middle lobe ca. 4 × 6 mm; lateral lobes ovate, ca. 2 mm wide. Connectives ca. 1.8 cm wide, semicircular-arcuate, glabrous, upper arms ca. 3 × as long as lower. Nutlets dark brown, ellipsoid, ca. 2.5 mm. Fl. Jul-Sep.
Home