Herbs annual, (6--)10--20 cm tall, densely pubescent throughout, not drying black. Stems erect. Leaves opposite, distal ones sometimes in whorls of 3; petiole of basal leaves to 1.7 cm, densely whitish villous. Stem leaves ± sessile or petiole ca. 5 mm; leaf blade ovate to ovate-lanceolate, sometimes long triangular-ovate, 1--3 cm X 5--11 mm, pubescent on both surfaces, pinnatifid; segments ovate or orbicular, crenate dentate. Inflorescences spicate, to 9.5 cm, many flowered; bracts leaflike. Calyx 1.2--1.5 cm, densely pubescent, slightly cleft anteriorly; lobes 5, unequal, posterior lobe shortest, entire, others obscurely dentate. Corolla yellow, 2.2--2.5 cm; tube erect, 1--1.2 cm; galea falcate apically, with 3--6 marginal teeth on each side near rounded apex; lower lip shorter than galea, middle lobe larger than lateral pair. Filaments pubescent basally. Capsule triangular to narrowly ovoid, to 1.4 cm. Fl. Jun--Aug, fr. Aug--Sep.
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