Herbs perennial. Stems prostrate, to 90 cm, 1.5--2 mm in diam. at base, usually branched, with multicellular hairs. Leaves opposite; petiole 0.5--1.8 cm; leaf blade ovate to broadly ovate, 1.5--4 X 1.2--3 cm, abaxially sparsely so or glabrescent, with many scattered brown or occasionally transparent glandular dots, adaxially densely strigillose, base subrounded, truncate to cordulate, apex acute; veins 3 or 4 pairs; veinlets obscure. Pedicel 0.7--1.5 cm, elongating to 2.5 cm and recurved in fruit, densely pubescent. Flowers solitary, in axils of medial leaves. Calyx lobes narrowly lanceolate, 7--8 X 1--1.5 mm, puberulous, costate. Corolla yellow; tube ca. 2 mm; lobes elliptic to elliptic-lanceolate, 4--6 X 3--4 mm, sparsely dull red or brown glandular punctate, apex acute to subobtuse. Filaments connate basally into a ca. 2 mm high tube, free parts 3--5 mm; anthers oblong, dorsifixed, opening by lateral slits, ca. 1.5 mm. Ovary ovoid; style 6--7 mm. Capsule subglobose, 3.5--4 mm in diam. Fl. Apr-Jun.
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A herb. It keeps growing from year to year. The stems lie along the ground and it grows to 90 cm long. The leaves are opposite and 2-4 cm long by 1-3 cm wide. The flowers occur singly in the axils of the leaves.
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