Euonymus tonkinensis (Loes.) Loes.

This species is very similar to Euonymus japonicus; however, due to limited materials, further study is still needed. The distribution report from Hainan has not been confirmed.

Evergreen shrubs, to 2 m tall; branches and twigs round, usually brown or yellow. Petiole 3-5 mm; leaf blade rotund to ovate, 4-5 × 3-3.5 cm, base rounded to cuneate, distal margin crenulate, apex rounded or subacute; lateral veins ca. 5 pairs. Peduncle 7-8 cm, sturdy, usually several × dichotomously branched with 20-30 flowers; pedicel ca. 5 mm. Flowers 4-merous, ca. 5 mm in diam.; sepals semirotund; petals nearly orbicular, greenish. Capsule brown or brown-yellow, 8-10 mm in diam. Aril red. Fl. Feb-Aug, fr. Jul-Jan.

Guangdong, Guangxi, ?Hainan [N Vietnam].

Forests, woodlands, scrub; 1500-3400 m.

Euonymus chinensis Lindley var. tonkinensis Loesener, Notizbl. Königl. Bot. Gart. Berlin 3: 77. 1900.