Annual or sometimes perennial. Stems much-branched and sometimes mat-forming, pilose, often densely so. Lvs petiolate, usually shortly so. Lamina to 4 × 2 cm, but often < 10 × 7 mm, ovate and always at least some hastate, sometimes only 1 side lobed, ± glandular-hairy; base cordate to truncate; apex obtuse and mucronate, acute or short-acuminate, less often rounded. Fls solitary or in axillary racemes. Pedicels long, slender, pilose throughout or only towards apex. Calyx 3-5 mm long, somewhat accrescent, hairy; lobes = or > tube, lanceolate to ovate, short-acuminate. Corolla 10-13 mm long including spur (in fresh specimens), pale yellow with purplish upper lip; spur straight or nearly so. Capsule 3-4 mm long. Seeds c. 1 mm long, broad-ellipsoid, strongly alveolate.