Description from Flora of China
Quinaria lansium Loureiro, Fl. Cochinch. 1: 272. 1790; Clausena wampi (Blanco) Oliver; Cookia wampi Blanco.
Trees to 12 m tall. Leaves 5-11-foliolate; petiolules 4-8 mm; leaflet blades ovate to ovate-elliptic, 6-14 × 3-6 cm, midvein often pubescent, base rounded to broadly cuneate, margin repand to crenulate. Inflorescences terminal, paniculate. Flowers globose in bud. Calyx lobes broadly ovate, ca. 1 mm. Petals oblong, ca. 5 mm. Stamens 10; filaments linear, basal portion slightly expanded. Disk short. Ovary hirsute. Fruit pale yellow, globose, ellipsoid, or broadly ovoid, 1.5-3 × 1-2 cm, 1-4-seeded. Fl. Apr-May, fr. Jul-Aug (fl. and fr. ca. 1 month earlier in Hainan). 2n = 18.
This species is cultivated for its fruit in China and elsewhere in warm areas of the world.
Fujian, Guangdong, Guangxi, S Guizhou, Hainan, Sichuan, SE Yunnan [Vietnam].