Herbs perennial, creeping when young, glabrous. Roots long, fibrous. Sterile shoots ascending, 5-10 cm, apically often leafy. Flowering stems rooting at base, ascending, 10-30 cm. Leaves alternate, opposite, or 3-verticillate; pseudopetiole 1.1-1.8 cm; leaf blade ovate, elliptic, or oblong, 2-5 × 1.2-2.8 cm, base abruptly tapered, margin sparsely and irregularly dentate, apex obtuse to subacute. Inflorescence branches scorpioid. Flowers sessile, 5-or 6-merous. Sepals triangular-linear, 2-2.5 mm, base dilated and spurless, apex obtuse. Petals yellow, lanceolate-oblong to subovate, 5-7 × 1.7-2 mm, base slightly narrowed, apex long mucronate. Stamens 10-12; antepetalous ones 3-4.5 mm, inserted near petal base. Nectar scales subquadrangular, ca. 0.5 × 0.4-0.6 mm, apex slightly dilated and emarginate. Carpels suberect, ovoid-oblong, 3-4 mm, adaxially slightly gibbous, base connate for 0.5-0.7 mm. Follicles stellately horizontal, ca. 5 mm, base connate for ca. 1 mm. Seeds numerous. Fl. Apr-Jun, fr. Jun.
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