Description from Flora of China
Herbs erect. Stems 50-80 cm, reddish, sparsely pube-scent, basally glabrescent, branched. Petiole reddish, 1-4 cm; leaf blade ovate to ovate-oblong, (2.5-)4-11 × (1.3-)2-5.5 cm, papery, adaxially puberulent or dusty hairy, pubescent on veins, abaxially sometimes entirely glandular, with sparsely puberulent veins, base broadly cuneate to obliquely shallow cordate, margin subcrenate, apex short acuminate to acute. Racemes 8-9 cm; rachis densely glandular pubescent; bracts ovate-subulate, ca. 5 × 2 mm, abaxially fine pilose along 3 veins, base cuneate, margin entire, white ciliate, apex caudate-acuminate. Pedicel 1-2 mm, to 5 mm following anthesis, densely glandular pubescent. Calyx to 4 mm, glandular pubescent, throat pilose annulate, margin ciliolate; teeth of upper lip subequal or middle tooth smaller, teeth of lower lip lanceolate. Corolla dark purple, to 1.1 cm; tube subcylindric, ca. 9 mm, to 2 mm wide at throat, sparsely puberulent, horizontally fine pilose annulate ca. 2.5 mm above base inside; upper lip ca. 2 mm, emarginate; lower lip ca. 3 mm, middle lobe densely white barbate, red glandular. Posterior stamens included. Ovary glabrous. Fl. Oct.
* Sparse forests in valleys; 600-700 m. Fujian, Guangdong.