Elaeocarpus varunua Buch.-Ham.

Trees to 30 m tall. Terminal bud gummy resinous; branches black when dry; branchlets sparsely gray puberulent, glabrescent. Petiole 3-8 cm, puberulent at first, glabrescent, swollen at both ends; leaf blade abaxially green, adaxially dark green, shiny, elliptic to oblong, 10-20(-25) × 5-9(-12) cm, membranous, abaxially shortly puberulent, both surfaces white sericeous when young, glabrous when mature, lateral veins (10-)12-14 per side, prominently raised abaxially, impressed adaxially, parallel, tertiary veinlets dense, prominent on both surfaces, base rounded or obtuse, margin entire or slightly crenate, apex acute, with obtuse acumen. Racemes in axils of current and fallen leaves, 7-12 cm; peduncles gray-white puberulent. Pedicel ca. 1 cm, gray-white puberulent. Flowers ca. 1.5 cm. Sepals 5, narrowly lanceolate, ca. 1 cm, both surfaces gray puberulent. Petals 5, linear, ca. 11 × 3.5 mm, lower 1/2 woolly on both surfaces, upper 1/2 laciniate; segments 16-18. Stamens 30-40; filaments ca. 1 mm; anthers ca. 4.5 mm; awn 1-1.5 mm, erect or slightly curved. Disk 10-lobed, sparsely pubescent. Ovary 3-loculed, woolly; style ca. 8 mm, villous. Drupe ellipsoid, 1.4-1.7 cm, glabrous; endocarp hard, ca. 1 mm thick. Fl. Mar-Apr, fr. Aug-Sep. 2n = 30.

Himalaya (Kumaun to Sikkim), Assam, Malaya.

Guangdong, Guangxi, Xizang, Yunnan [India, ?Malaysia, ?Nepal, Vietnam].

Evergreen forests; 300-1400 m.

Elaeocarpus decurvatus Diels.

Côm hay còn gọi côm xanh (danh pháp khoa học: Elaeocarpus varunua) là một loài thực vật có hoa trong họ Côm. Loài này được Buch.-Ham. ex Mast. mô tả khoa học đầu tiên năm 1874.

美脉杜英（学名：Elaeocarpus varunua），为杜英科杜英属下的一个植物种。