Woody climbers, sometimes trailing, deciduous. Branchlets green, striate. Petiole 4-6 mm, pubescent; leaf blade ovoid-oblong or oblong, 4-6 × 2-3 cm, membranous, both surfaces glabrous, lateral veins 5 or 6 pairs, veins and reticulate veins conspicuous, base cuneate or broadly cuneate, margin entire or inconspicuously erose or denticulate, apex acuminate. Cymes 1-or 2-flowered, 1.5-2 cm. Sepals 5, green, equal, oblong, 2-2.5 × 1-2 mm, apex rounded. Petals 5 or 6, purple, oblong or obovate-oblong, ca. 5 × 2.5 mm. Stamens 5 or 6, slightly shorter than petals; filaments flattened, ca. 2.5 mm; anthers globose, ca. 1 mm. Disk swollen, higher than broad, base broadest. Ovary coniform, glabrous. Schizocarp blue, subreniform or suborbicular, ca. 5 mm in diam., with foveolate. Fl. Apr, fr. Jul-Aug.
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