小叶杨Populus simonii
中文名（Chinese Name）：小叶杨
学名（Scientific Name）：Populus simonii Carrière [excluded]
英文名（English Common Name）：Simon poplar
别名（Chinese Common Name）：南京白杨、青杨
异名（Synonym）：Populus simonii f. fastigiata Schneid. Populus simonii f. robusta C. Wang et Tung Populus simonii f. pendula Schneid. Populus laurifolia var. simonii Regel Populus balsamifera var. simonii Wesm.
科属（Family & Genus）：杨柳科（Salicaceae）杨属
形态特征（Description）：乔木，高达20米，胸径50厘米以上。树皮幼时灰绿色，老时暗灰色，沟裂；树冠近圆形。幼树小枝及萌枝有明显棱脊，常为红褐色，后变黄褐色，老树小枝圆形，细长而密，无毛。芽细长，先端长渐尖，褐色，有粘质。叶菱状卵形、菱状椭圆形或菱状倒卵形，长3-12厘米，宽2-8厘米，中部以上较宽，先端突急尖或渐尖，基部楔形、宽楔形或窄圆形，边，缘平整，细锯齿，无毛，上面淡绿色，下面灰绿或微白，无毛；叶柄圆筒形，长0.5-4厘米，黄绿色或带红色。雄花序长2-7厘米，花序轴无毛，苞片细条裂，雄蕊8-9（25）；雌花序长2.5-6厘米；苞片淡绿色，裂片褐色，无毛，柱头2裂。果序长达15厘米；蒴果小，2 (3)瓣裂，无毛。花期3-5月，果期4-6月。
分布（Distribution）：东北、华北、华中、西北及西南各省区均产，垂直分布一般多生在2000米以下，最高可达2500米；沿溪沟可见。
用途（Use）：木材轻软细致，供民用建筑、家具、火柴杆、造纸等用；为防风固沙、护堤固土、绿化观赏的树种，也是东北和西北防护林和用材林主要树种之一。
引自中国植物志英文版：FOC Vol. 4 Page 148
Populus simonii Carrière, Rev. Hort. 1867: 360. 1867.
小叶杨 xiao ye yang| Salicaceae | Populus
Trees to 20 m tall; trunk to 50 cm d.b.h.; bark grayish green when young, dark gray on old trees, furrowed; crown subrounded. Branchlets of young trees and sprouts usually russet, becoming yellowish brown, conspicuously angled; branchlets of old trees terete, slender, glabrous. Buds brown, elongate, viscid, apex acuminate. Petiole yellowish green or reddish, terete, 0.5-4 cm; leaf blade rhombic-ovate, rhombic-elliptic, or rhombic-obovate, 3-12 × 2-8 cm, broadest above middle, abaxially grayish green or slightly white, adaxially brightly greenish, glabrous, base cuneate, broadly cuneate, or narrowly rounded, margin serrulate, apex abruptly acute or acuminate. Male catkin 2-7 cm; rachis glabrous; bracts greenish, laciniate, lobes brown, glabrous. Male flower: stamens 8-9(-25). Female catkin 2.5-6 cm, to 15 cm in fruit. Female flower: stigma 2-lobed. Capsule small, glabrous or pubescent, 2(or 3)-valved. Fl. Mar-May, fr. Apr-Jun. 2n = 38*
Mountains, plains, alluvial deposits, valleys; near sea level to 3000 m. Hebei, Heilongjiang, Jiangsu, Jilin, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, Yunnan, Zhejiang [Mongolia]
Used for timber.
（责任编辑：徐晔春）
学名（Scientific Name）：Populus simonii Carrière [excluded]
英文名（English Common Name）：Simon poplar
别名（Chinese Common Name）：南京白杨、青杨
异名（Synonym）：Populus simonii f. fastigiata Schneid. Populus simonii f. robusta C. Wang et Tung Populus simonii f. pendula Schneid. Populus laurifolia var. simonii Regel Populus balsamifera var. simonii Wesm.
科属（Family & Genus）：杨柳科（Salicaceae）杨属
形态特征（Description）：乔木，高达20米，胸径50厘米以上。树皮幼时灰绿色，老时暗灰色，沟裂；树冠近圆形。幼树小枝及萌枝有明显棱脊，常为红褐色，后变黄褐色，老树小枝圆形，细长而密，无毛。芽细长，先端长渐尖，褐色，有粘质。叶菱状卵形、菱状椭圆形或菱状倒卵形，长3-12厘米，宽2-8厘米，中部以上较宽，先端突急尖或渐尖，基部楔形、宽楔形或窄圆形，边，缘平整，细锯齿，无毛，上面淡绿色，下面灰绿或微白，无毛；叶柄圆筒形，长0.5-4厘米，黄绿色或带红色。雄花序长2-7厘米，花序轴无毛，苞片细条裂，雄蕊8-9（25）；雌花序长2.5-6厘米；苞片淡绿色，裂片褐色，无毛，柱头2裂。果序长达15厘米；蒴果小，2 (3)瓣裂，无毛。花期3-5月，果期4-6月。
分布（Distribution）：东北、华北、华中、西北及西南各省区均产，垂直分布一般多生在2000米以下，最高可达2500米；沿溪沟可见。
用途（Use）：木材轻软细致，供民用建筑、家具、火柴杆、造纸等用；为防风固沙、护堤固土、绿化观赏的树种，也是东北和西北防护林和用材林主要树种之一。
引自中国植物志英文版：FOC Vol. 4 Page 148
Populus simonii Carrière, Rev. Hort. 1867: 360. 1867.
小叶杨 xiao ye yang| Salicaceae | Populus
Trees to 20 m tall; trunk to 50 cm d.b.h.; bark grayish green when young, dark gray on old trees, furrowed; crown subrounded. Branchlets of young trees and sprouts usually russet, becoming yellowish brown, conspicuously angled; branchlets of old trees terete, slender, glabrous. Buds brown, elongate, viscid, apex acuminate. Petiole yellowish green or reddish, terete, 0.5-4 cm; leaf blade rhombic-ovate, rhombic-elliptic, or rhombic-obovate, 3-12 × 2-8 cm, broadest above middle, abaxially grayish green or slightly white, adaxially brightly greenish, glabrous, base cuneate, broadly cuneate, or narrowly rounded, margin serrulate, apex abruptly acute or acuminate. Male catkin 2-7 cm; rachis glabrous; bracts greenish, laciniate, lobes brown, glabrous. Male flower: stamens 8-9(-25). Female catkin 2.5-6 cm, to 15 cm in fruit. Female flower: stigma 2-lobed. Capsule small, glabrous or pubescent, 2(or 3)-valved. Fl. Mar-May, fr. Apr-Jun. 2n = 38*
Mountains, plains, alluvial deposits, valleys; near sea level to 3000 m. Hebei, Heilongjiang, Jiangsu, Jilin, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, Yunnan, Zhejiang [Mongolia]
Used for timber.
（责任编辑：徐晔春）
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