Annual, creeping or procumbent, hirsute herb, about 15-40 cm high; stem swollen above the nodes, somewhat 4-angled, diffused, almost covered with white, deflexed bristles; leaves shortly petiolate, opposite, ovate, crenate, obtuse at apex; flowers in terminal, 2-6 flowered, axillary spikes, densely covered with white and yellowish brown hairs; bracts obovate or lanceolate, densely pubescent; bracteoles absent; sepals-5, subequal, lanceolate, glabrous, scarius, tips hirsute; corolla blue or violet; lobes subequal, sub spathulate in fruit, tube short, cylindric, mouth wide with 2-hairy lines in the palate; stamens-4, didynamous, included, anthers 2-celled, oblong, one lobe very short, filaments long; ovary glabrous, 2-celled, each 3-10 ovuled; capsules cylindric, glabrous, 6-20 seeded; seeds broadly ellipsoid or suborbicular, compressed, glabrous with white margin, yellowish brown.