Plants suffrutescent, glabrous. Petiole ca. 2 mm; leaf blade triangular to broadly ovate, 5.3-11.3 × 2.5-6.5 cm, base truncate to broadly cuneate, margin irregularly crenate, apex triangularly obtuse. Inflorescences paniculiform cymose; pedicels ca. 1 mm. Sepals linear-lanceolate, ca. 8 × 3 mm. Corolla yellow; tube urn-shaped, ca. 1 × 0.2-0.6 cm; lobes broadly elliptic, ca. 7 × 5 mm, apex abruptly acute. Stamens inserted at corolla throat; filaments ca. 1.2 cm. Nectar scales linear, ca. 4 × 0.5 mm. Carpels lanceolate, ca. 1.2 cm. Styles short. Follicles many seeded. Seeds oblong, finely rugose. Fl. Dec.