A small, much branched, unarmed procumbent herb with upto 30 cm long branches rooting at the nodes and pubescent near apex. Leaves opposite, subsessile, oblong-ovate, 1-3.5 cm x 4-10 mm, mostly glabrous or puberulous, margins entire, ± obtuse at the apex. Flowers white to pale-blue or violet, c. 8 mm long, in axillary and terminal, up to 8 cm long spikes; bracts broadly elliptic, subacute; bracteoles linear, 4-5 mm long, pubescent. Calyx 5-lobed to the middle, lobes linear, c. 2 mm long, hairy, scarious-ciliate on margins, acute. Corolla pubescent, tube c. 3 mm long, limb 2-lipped, upper lip 2-lobed, patent, lower lip shortly 3-lobed. Stamens 2 fertile and 2 staminodial, anthers oblong, ± divaricate basally. Ovary oblong, many-ovuled, hairy at tip; style filiform, c. 5 mm long. Capsule narrowly oblong, glabrous except the tip, more than 15-seeded. Seeds minute, ± orbicular.

Fl. Per.: November-April.

Type: In Bengalia locis incultis inter gramina tempore frigidis, Roxb., Icon. t. 1016 (K).

Distribution: Indo-China, Burma, Bangla Desh, Bhutan, Nepal, India, Pakistan (Sind) and doubtfully Afghanistan.