10. Celtis bungeana Blume, Mus. Bot. 2: 71. 1856.
黑弹树 hei dan shu
Celtis amphibola C. K. Schneider; C. bungeana var. deqinensis X. W. Li & G. S. Fan; C. bungeana var. lanceolata E. W. Ma; C. chinensis Bunge (1833), not Persoon (1805); C. davidiana Carrière; C. gongshanensis X. W. Li & G. S. Fan; C. mairei H. Léveillé; C. yangquanensis E. W. Ma.
Trees, to 10 m tall, deciduous. Bark gray. Branchlets brown, glabrous, with scattered elliptic lenticels, grayish brown on following year. Winter buds brown, 1-3 mm, glabrous. Petiole 0.5-1.5 cm, pale yellow or brown, sometimes pubescent when young, adaxial furrow broad; leaf blade narrowly ovate, oblong, or ovate, 3-7(-15) × 2-4(-5) cm, thickly papery, glabrous except for tufts of hairs abaxially in axils of main veins and occasional hairs scattered on veins, base broadly cuneate to ± rounded and slightly oblique or not, margin irregularly shallowly serrate on apical half, sometimes entire, teeth 0-10(-15) on each side, apex acute to acuminate; secondary veins 2 or 3 on each side of midvein. Style branches linear, undivided. Infructescence solitary, slender, glabrous, 1-2.5 cm; fruiting pedicel 1.7-4 × as long as subtending petiole. Drupe 1 or 2 per infructescence, blackish blue when mature, ± globose, 6-8 mm in diam. Stone ± globose, 4-5 mm in diam., nearly smooth, inconspicuously ribbed. Fl. Apr-May, fr. Oct-Nov.
Forests, among shrubs, roadsides, mountain slopes; 100-2300 m. Anhui, Gansu, Hebei, Henan, Hubei, Jiangsu, Jiangxi, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, E Xizang, Yunnan, Zhejiang [Korea].
Celtis bungeana var. deqinensis, described from Yunnan, differs chiefly in having a thicker leaf blade.