Shrubs 1-1.5 m. Stems erect, much branched; branches gray-brown, glabrescent; branchlets brownish, densely glandular pubescent. Leaves opposite; petiole 1-3 mm; leaf blade ovate to subcircular, 1.5-4.5 × 1.5-3 cm, sparsely minutely glandular pubescent, yellowish glandular, base broadly cuneate to rounded, margin serrate, apex acute or obtuse to rounded and mucronate, lateral veins 4-or 5-paired. Panicles terminal, ca. 10 cm, densely glandular pubescent; cymes long pedunculate, 3-7(-11)-flowered; floral leaves and bracts subcircular, margin entire or remotely serrate, apex apiculate. Calyx broadly campanulate, ca. 4-5 × to 4 mm, purplish, glandular pubescent, 2-lipped; teeth narrowly triangular to ovate-triangular, ca. 1.5-2.5 mm, lower 2 slightly longer, apex acute; fruiting calyx tubular-campanulate, curved, dilated to 6 mm. Corolla 8-10 mm, bluish, blue-purple, or dark blue, limb slightly pubescent outside, tube ca. 4 mm, upper lip ca. 2.5 mm, lower lip ca. 4 mm. Stamens included. Style included. Nutlets brownish, triquetrous, ellipsoid, ca. 1.2 mm, glabrous. Fl. Jun-Aug, fr. Sep.
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