Mastixia cambodiana Pierre, Fl. For. Cochinch. Fasc. 17. 1892; M. alternifolia Merrill & Chun.

Trees 7–15 m tall; branches terete. Leaves with petiole 1.5–2 cm; leaf blade elliptic or obovate-oblong, 6–11 × 2.5–5 cm, leathery, veins 3–5, arched inward, base cuneate, apex shortly acuminate. Inflorescences 4–5 cm, puberulous; bracteoles lanceolate to triangular, 1–1.5 mm. Drupes 1.5–1.7 cm. Fl. May–Jun, fr. Oct.

Dense forests; 300–900 m. Hainan [Cambodia, Vietnam].