黑杨Populus nigra Linn.

别名：Lombardy poplar;意大利杨;卡拉特乃克;欧洲黑杨;箭杆杨;小黑杨;线白杨;电杆杨;

科名：杨柳科 Salicaceae

属名：杨属 Populus

《中国植物志》第20(2)卷063页
  53.黑杨（东北木本植物图志）
  Populus nigra L. Sp. Pl. 1034. 1753; Kom. Fl. URSS, 5: 228. t. 10: 7. 1936; 刘慎谔等, 东北木本植物图志, 114. 图版11: 3. 1955; Poljak, in Fl. Kazakhst. 3: 43. 1960.

《Flora of China》 Vol. 4 (1999)
Populus nigra  Linnaeus
黑杨   hei yang
Trees to 30 m tall; bark dull gray, furrowed when older; crown broadly ovoid. Branchlets yellowish, terete, glabrous. Buds russet, ovoid, very viscid. Petiole ca. as long as or longer than leaf blade, laterally flattened, glabrous; leaf blade rhombic, rhombic-ovoid, or deltoid, 5-10 × 4-8 cm, thinly leathery, abaxially greenish, adaxially green, base cuneate or broadly cuneate, rarely truncate, margin crenate-serrate, ciliate, apex long acuminate. Flower buds outwardly curved at apex. Male catkin 5-6 cm; rachis glabrous; bracts brownish, 3-4 mm, membranous, laciniate. Male flower: stamens 15-30; anthers purplish red. Fruiting catkin 5-10 cm. Female flower: ovary ovoid, glabrous, stipitate; stigmas 2. Capsule ovoid, 5-7 × 3-4 mm, 2-valved, stipitate. Fl. Apr-May, fr. Jun. 2n = ?19*, 38*, 57.
Along rivers. Native in Xinjiang; cultivated in Fujian, Hebei, Jiangsu, Liaoning, Nei Mongol, Shaanxi, Sichuan, Yunnan [N Africa, WC Asia, Europe].