Woody climbers, to 12 m, evergreen. Young branches brown or black-brown, waxy; branchlets glabrous, sparsely puberulent, or tomentulose; bud scales broadly triangular or broadly ovoid, glabrous, ciliate. Petiole 8-15 mm, glabrous or somewhat puberulent; leaf blade abaxially light green, adaxially dark green, oblong, elliptic, obovate-oblong, or narrowly elliptic, 5-12 × 1.5-4 cm, leathery, lateral veins 5-8 pairs, straight, base cuneate or rounded, apex acute or long acuminate. Cymes 3-6-flowered, arranged in a short, ± corymbose inflorescence 10-20-flowered, glabrous to sparsely tomentulose, glomerulate-clustered at early flowering, to 4 cm when blooming; peduncles very short, 1-2 mm. Pedicel 3-6 mm. Sepals 5, ovate or oblong-ovate, 1-2 mm, glabrous, with red glandular dots, margin white, apex acute or obtuse. Petals 5, light green, with red spots at middle, oblong-ovate or ovate, 4.5-6.5 × 2-2.5 mm, 7-veined. Stamens 5, 3-5 mm; filaments flattened; anthers upright, elliptic or oblong-elliptic, extrorse. Disk cup-shaped, shortly 5-lobed. Ovary glabrous. Schizocarp red, obovoid or broadly obovoid, compressed, 6-7 × 7-8.5 mm; endocarp with conspicuous midrib, narrowly keeled, with foveolate. Fl. Feb-May, fr. May-Oct.
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