大叶朴 da ye po

Celtis aurantiaca Nakai; C. koraiensis var. aurantiaca (Nakai) Kitagawa.

Trees, to 15 m tall, deciduous. Bark gray. Branchlets brown, glabrous or with a few hairs near nodes, with scattered small elliptic lenticels. Winter buds brown, 2-4 mm; inner scales brown pubescent. Petiole brown, 0.5-1.5 cm, adaxially with a narrow and sharply defined furrow, glabrous or sparsely pubescent; leaf blade elliptic, obovate-elliptic, or rarely broadly obovate, 7-12 × 3.5-10 cm, papery, glabrous or abaxially sparsely pubescent but sometimes only on veins and vein axils, base broadly cuneate, ± rounded, or ± cordate and slightly oblique, margin deeply laciniate-toothed, teeth 15-24 on each side and 4-8 mm, apex truncate with a caudate tip; secondary veins 3 or 4 on each side of midvein. Flowers solitary or fascicled. Style branches linear, undivided. Infructescence stout, solitary, glabrous or sparsely pubescent, 1.5-2.5 cm, 2-2.5 × as long as subtending petiole. Drupe 1 per infructescence, orangish yellow, dark brown when mature, ± globose to ellipsoid, 1-1.3 cm, basally and apically obtuse. Stone grayish brown, ovoid-elliptic, ca. 8 mm in diam., reticulately foveolate, 4-ribbed. Fl. Apr-May, fr. Sep-Oct.

Forests, valleys, slopes; 100-1500 m. N Anhui, E Gansu, Hebei, W Henan, Jiangsu, S Liaoning, S Shaanxi, Shandong, S Shanxi [Korea].