Erect, annual herb, 7-15 cm tall. Cauline leaves 4.5-11 x 2-6 cm, elliptic-ovate, 3-4 lobed, with truncate base; terminal lobe acute-obtuse, lateral lobes acuminate, medinialy incurved, as long as broad, all antrorse. Flowering begins at node 3. Racemes lax. Floral leaves 6-11 x 5-10 mm broadly ovate, 3-5 lobed, with truncate base; terminal lobe acuminate, lateral lobes acuminate – slightly aristulate, medinialy incurved, longer than broad, all antrorse. Flowers 6-8 mm long; pedicels c. 0.5 mm long. Calyx 4-5 mm long hairy, hairs of the same type as on leaves; lobes 2-3 x 0.5-1 mm, equal; tube 2-3 mm long. Corolla white with yellow throat, dorsally 5.5-7.5 mm long; tube 3-4 mm long, externally pubescent especially on the upper lip and the tube. Upper lip 3-4 mm long, lower lip 3-5 mm long; lobes oblong, emarginate, erose-slightly notched, middle lobe largest 3-4 x 1.5-2 mm, left and right lobes unequal, left lobe 1.5-2 x 1-2 mm, right lobe 2-2.5 x 1.5-2 mm. Two anthers with unequal and two with subequal arms, sparsely hairy; hairs long, twice as long as the longer awn. Capsule c. 5 x 2.5 mm, oblong, emarginate, shorter than the calyces, ciliate at the upper part; cilia stiff. Seeds 7-14 per capsule, oblong, obtuse.