Slender sparingly-branched annual herb 5-20 cm. tall, branches bifariously white-pubescent and ± glandular-pilose, internodes very elongated. Lvs sessile, up to 10-12 × 7-8 mm., ± obovate-cuneate with 2-3 pairs of acute teeth, sts almost suborbicular with teeth obtuse, glab. or with sparse long glandular hairs, sts sparsely white-pubescent, margins thickened and revolute. Fls few towards the tips of the branches, pedicels short or up to 10 mm. in fl., us. elongated and up to 25 mm. in fr. Calyx 4-6 mm. long, sts enlarged in fr. up to 12 × 8 mm., pilose with long glandular hairs and sts also white-pubescent; lobes acute to obtuse, margins and midribs thickened. Corolla white, ± 10-12 mm. long; tube slightly to much > calyx; lobes of lower lip 1·5-3 mm. wide, entire. Anthers yellow to golden brown, margins sparsely hairy to glab., awns slender, almost equal. Capsule ± = calyx or much shorter, ± 5-6 × 5 mm., obovate, finely setose at apex; seeds c. 4-6 per locule.

Slender, sparingly-branched, annual herb 5-20 cm tall; branches bifariously white-hairy and ± glandular-pilose. Lvs sessile, to 12 × 8 mm, usually ± obovate-cuneate with 2-3 pairs of acute teeth, sometimes almost suborbicular with obtuse teeth, glabrous or with sparse long glandular hairs, sometimes sparsely white-hairy. Fls on pedicels to 10 mm long. Calyx 4-6 mm long, pilose with long glandular hairs and sometimes also white-hairy, divided ?-1/2 way. Corolla white, c. 10-12 mm long. Anthers yellow to golden brown; margins sparsely hairy to glabrous; awns slender, almost equal. Capsule ± = or much < calyx, c. 5-6 × 5 mm.