Annual herb, primary stem 20-300 mm long, erect, soon branching from the base and above, branches erect or decumbent, glandular-puberulous on upper parts (inflorescence axis), hairs up to 0.1 mm long, pubescent below, hairs up to c. 0.25 mm long, eglandular, retrorse, distantly leafy, often with axillary leaf tufts (incipient branches). Leaves: radical with blade c. 5-18 x 2-8 mm, elliptic tapering into a broad flat petiolar part c. 3-15 mm long (nearly equalling to up to half as long as blade), margins entire to sparsely toothed, they and the upper surface with scattered eglandular hairs up to 0.4-0.6 mm long, lower surface glabrous; cauline leaves c. 4-15 x 0.8-3.2 mm, elliptic briefly narrowed at the base, otherwise as the radical leaves. Flowers loosely panicled, inflorescence branches up to 50 mm long. Pedicels up to 1.5-3 mm long, filiform. Bracts adnate nearly to apex of calyx, c. 5-12 x 0.8-2.2 mm, oblong-lanceolate, entire, coarse eglandular hairs up to 0.4-0.6 mm long on margins and tip of inner face, a few tiny almost sessile glands as well, backs glabrous. Calyx c. 5-6.25 mm long, lips c. 1 mm long, margins very shortly pubescent, otherwise glabrous except for minute ± sessile glands. Corolla tube c. 7-8.5 mm long (throat c. 2-3 mm in diam.), minutely glandular on upper part and on outside of lobes, limb zygomorphic, anticous lip c. 3.5-6 x 3.6-5 mm, broadly elliptic, white, posticous lip c. 6-10 x 8-10 mm, 4-lobed, lobes roughly 3.5 x 3 mm, oblong-elliptic, the two posticous ones united for about half their length, all yellow, palate orange, bearded at the base with clavate hairs c. 1 mm long, running down back of tube to point of insertion of stamens. Stamens 2, filaments c. 2-5 mm long, bearded at base with clavate hairs c. 0.3 mm long, anthers 2-2.75 mm long, well exserted; staminodes 2, c. 0.5-0.7 mm long, exserted. Stigma c. 4-5.5 mm long, exserted. Style 3.5-6 mm long. Ovary 3-4 x 1.5-2 mm Capsules 7-8 x 3.54 mm Seeds c. 0.8-1 x 0.6-0.8 mm.
More
Erect annual, 20-300 mm tall, stem glandular-puberulous. Leaves in a basal tuft, elliptic, tapering below, distantly leafy above, glandular-hairy on upper surface. Flowers loosely panicled, corolla tube ± 7-8.5 mm long, minutely glandular, 2-lipped, upper lip white, rarely pale yellow, lower lip yellow with orange palate, stamens 2.