Lianas woody or scandent shrubs, to 2 m tall. Branchlets terete, ± fulvous pubescent when young, glabrous when mature, longitudinally finely striate. Leaves odd-pinnate, rarely 1-foliolate; petiole, rachis, and petiolules ± pubescent; leaflets usually 2–4-paired; leaflet blade greenish abaxially, dark green adaxially, elliptic to elliptic-ovate, 6–12 × 3–5 cm (proximal ones smaller), herbaceous to papery, glabrous on both surfaces or sometimes appressed pubescent along midvein abaxially, veins 5–7-paired, curved ascending, distinctly looped and jointed some distance from margin, base obliquely rounded, margin entire, apex emarginate and abruptly shortly acuminate. Inflorescences axillary, rarely terminal, usually fascicles of (1 or)2 or 3 racemes; racemes 2–5 cm, 4-or 5-flowered; rachis and pedicels subglabrous; bracts minute, pubescent. Sepals 5, free, ovate to long elliptic, 5–6 × 2–3 mm, enlarged in fruit, membranous, slightly pubescent abaxially, rarely glabrous. Petals 12–25 × 1–2.5 mm, glabrous or with a few hairs on distal 1/2 abaxially. Stamens free or ± connate at base. Carpels usually glabrous. Follicles 1–3 per flower, sessile, dark red when fresh, purple-red when dry, long ellipsoid, 1.3–2.5 × 0.9–1.2 cm, glabrous, apex abruptly pointed. Seed 1, black, glossy, surrounded by fulvous aril at base.