Description from Flora of China
Canarium nigrum (Loureiro) Engler (1896), not Roxburgh (1832); C. pimeloides Govaerts, nom. illeg. superfl.; C. tramdenum C. D. Dai & Yakovlev; Pimela nigra Loureiro.
Trees, up to 20 m tall, ca. 45 cm d.b.h. Branchlets ca. 1 cm in diam., glabrous. Leaves exstipulate; leaflets 4-6 pairs; blades broadly elliptic, ovate, or rounded, 6-17 × 2-7.5 cm, glabrous, base cuneate, margin entire, apex acute; lateral veins 8-15 pairs, reticulate veins conspicuous. Flowers in cymose panicles or inflorescences rarely racemose, glabrous, with more flowers in male plants. Calyx ca. 2.5 mm, shallowly lobed in male flowers, 3.5-4 mm, shallowly lobed or nearly truncate in female flowers. Petals ca. 8 mm in female flowers. Filaments connate for about 1/2 of length; disk fleshy with center depressed in male flowers, thin and shallowly 6-lobed in female flowers; anthers with 2 lines of bristles. Infructescences 8-35 cm, 1-4-fruited; pedicel ca. 2 cm; persistent calyx nearly flat, 8-10 mm in diam. Drupe purple-black when ripe, narrowly ovoid, 3-4 × 1.7-2 cm, cross section nearly rounded. Fl. Apr-May, fr. May-Nov.
Deng and Zhu (Taxon 54: 550. 2005) proposed the name Canarium pimela for conservation, which was subsequently recommended by the Committee for Vascular Plants (Brummitt, Taxon 56: 592. 2007).
Forests; 500-1300 m. Guangdong, Guangxi, Hainan, S Yunnan [Cambodia, Laos, Vietnam].