Plants perennial. Stems few branched, densely yellow-brown villous, glandular pilose apically, glabrescent basally. Stem leaves 2-4 pairs; petiole 0.5-12 cm; leaf blade ovate to ovate-triangular, (2.5-)3.5(-6) cm wide, adaxially finely pilose, abaxially pilose on veins, sparsely purple-brown glandular, base cordate to hastate, margin crenate or crenate-serrate, apex acute, rarely subobtuse. Inflorescences densely yellow-brown villous; verticillasters 4-flowered, in loose racemes or panicles 15-30 cm; bracts broadly ovate to ovate, to 1 cm. Pedicel 4-6 mm. Calyx campanulate, ca. 1 cm in flower, to 1.3 cm in fruit, yellow-brown villous, sparsely purple-brown glandular, 2-lipped to 1/3 its length; upper lip broadly triangular-ovate, ca. 4 × 7 mm, apex 3-mucronate; lower lip ca. 5 × 7 mm, teeth triangular-ovate, apex acute to subacuminate. Corolla purple-blue, ca. 2 cm, villous outside especially abaxially; tube obliquely pilose annulate inside, ca. 1.5 cm, narrowed at base, adaxially dilated beyond calyx, slightly curved at apex; upper lip ca. 5 mm; lower lip slightly longer, middle lobe subflabellate; lateral lobes obliquely ovate. Filaments ca. 5 mm; connectives ca. 8 mm, arms subequal. Style exserted. Nutlets brown with purple spots, ca. 1.5 mm. Fl. and fr. Aug.
Can be grown by cuttings or divisions. Seeds needs stratification.
Home