7. Alangium platanifolium (Siebold & Zuccarini) Harms var. trilobum (Miquel) Ohwi, Fl. Japan. 651. 1965.
三裂瓜木 san lie gua mu
Marlea platanifolia Siebold & Zuccarini var. triloba Miquel, Ann. Mus. Bot. Lugduno-Batavi 2: 159. 1866; Alan gium sinicum (Nakai) S. Y. Hu et al.; M. sinica Nakai.
Shrubs. Branches gray-brown, usually shortly pilose when young. Petiole 3-10 cm, shortly pubescent; leaf blade abaxially pale, adaxially green, cordate-orbicular, 7-20 × 7-20 cm, thinly membranous, 4-angled, abaxially usually prominently shortly pubescent, adaxially usually slightly shortly pilose, base slightly cordate, shallowly 3-5(-7)-lobed; lobes deltoid, apex caudately long acuminate. Inflorescence loosely few flowered. Limb of calyx ca. 1 mm, minutely toothed. Petals white, revolute at anthesis, linear, 3-3.5 cm × ca. 2.5 mm. Stamens 12; filaments shortly pilose on back at base; anthers glabrous. Drupe blue, ellipsoid, 7-8 mm, glabrous. Fl. Mar-Jun, fr. Jul-Sep.
Woods in mountains, loose, fertile soils; below 2000 m. Gansu, Guizhou, Hebei, Henan, Hubei, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, NE Yunnan, Zhejiang [Japan, Korea].
Alangium platanifolium var. platanifolium occurs only in Japan and Korea.