7. Celtis tetrandra Roxburgh, Fl. Ind., ed. 1832. 2: 63. 1832.
四蕊朴 si rui po
Celtis fengqingensis Hu ex E. W. Ma; C. formosana Hayata; C. kunmingensis W. C. Cheng & T. Hong; C. salvatiana C. K. Schneider; C. xizangensis E. W. Ma; C. yunnanensis C. K. Schneider.
Trees, to 30 m tall, deciduous or sometimes evergreen. Bark grayish white. Branchlets densely yellowish brown pubescent when young, brown, usually glabrescent with age; lenticels few or none. Winter buds brown, 1-3 mm; scales glabrous, margin ciliate. Stipules narrowly lanceolate, caducous, to 7 mm, never enclosing buds. Petiole 6-13 mm, brown, broadly sulcate, puberulous at least near adaxial furrow; leaf blade ovate-elliptic, ovate-lanceolate, or ± rhombic, 5-13 × 2.5-5.5 cm, thickly papery to ± papery, abaxially usually inconspicuously yellowish brown puberulent when young, with hairs scattered on major veins and sometimes tufted in vein axils with age, base oblique with one side ± rounded and other cuneate, margin entire or obtusely serrate, teeth 0-13 on each side, apex acuminate to shortly caudate-acuminate; secondary veins 3 or 4 on each side of midvein. Flowers fascicled, occasionally in racemes of 2 or 3 flowers. Style branches linear, undivided. Infructescences unbranched or seldom forked, rarely showing a small scar from a fallen male flower, 1-3 per leaf axil, rather slender, glabrous or pubescent, 0.8-1.5 cm; fruiting pedicel 1 or 2 × as long as subtending petiole. Drupe yellow to orange when mature, ± globose, 7-8 mm in diam. Stone ± globose, ca. 5 mm in diam., 4-ribbed. Fl. Mar-Apr, fr. Sep-Oct.
Mesophytic mixed forests, valleys, slopes; 700-1500 m. W Guangxi, Hainan, Taiwan, Sichuan (Xichang), S Xizang, C, E, and S Yunnan [Bhutan, Bangladesh, India, Indonesia, Myanmar, Nepal, Thailand, Vietnam].