Plants 10-80 cm tall. Stems erect, subquadrangular, striate, simple or branched from base and/or above base. Basal leaves usually withered at anthesis; petiole flattened, 1-1.5 cm; leaf blade elliptic to obovate, 1-3 cm × 5-8 mm, base cuneate, apex rounded. Stem leaves sessile or short petiolate; leaf blade elliptic-lanceolate to ovate, 3-8 × 1-1.5 cm, densely papillate when young, abaxially hispidulous along veins, adaxially becoming smooth, base obtuse to subrounded, apex acuminate, veins 3. Pedicel 0.5-3 cm. Calyx lobes linear-lanceolate, 5-8 × 1-1.5 mm, margin hispid-ciliate, apex acuminate. Corolla yellow, campanulate, 1.1-1.4 cm in diam. including spurs; tube 4-5 mm, base with 4-8 mm spurs; lobes elliptic to ovate, 5-7 × 3-5 mm, apex obtuse and apiculate. Filaments 2-3 mm; anthers subglobose, ca. 0.8 mm in diam. Seeds brown, 1-1.4 × ca. 1 mm. Fl. and fr. Jul-Sep.
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