毛白杨Populus tomentosa
中文名（Chinese Name）：毛白杨
学名（Scientific Name）：Populus tomentosa Carrière
英文名（English Common Name）：Chinese white poplar
别名（Chinese Common Name）：大叶杨、响杨
异名（Synonym）：Populus pekinensis Henry Populus glabrata Dode
科属（Family & Genus）：杨柳科（Salicaceae）杨属
形态特征（Description）：乔木，高达30米。树皮幼时暗灰色，壮时灰绿色，渐变为灰白色，老时基部黑灰色，纵裂，粗糙，干直或微弯，皮孔菱形散生，或2-4连生；树冠圆锥形至卵圆形或圆形。侧枝开展，雄株斜上，老树枝下垂；小枝（嫩枝）初被灰毡毛，后光滑。芽卵形，花芽卵圆形或近球形，微被毡毛。长枝叶阔卵形或三角状卵形，长10-15厘米，宽8-13厘米，先端短渐尖，基部心形或截形，边缘深齿牙缘或波状齿牙缘，上面暗绿色，光滑，下面密生毡毛，后渐脱落；叶柄上部侧扁，长3-7厘米，顶端通常有2(3-4)腺点；短枝叶通常较小，长7-11厘米，宽6.5-10.5厘米（有时长达18厘米，宽15厘米），卵形或三角状卵形，先端渐尖，上面暗绿色有金属光泽，下面光滑，具深波状齿牙缘；叶柄稍短于叶片，侧扁，先端无腺点。雄花序长10-14(20)厘米，雄花苞片约具10个尖头，密生长毛，雄蕊6-12，花药红色；雌花序长4-7厘米，苞片褐色，尖裂，沿边缘有长毛；子房长椭圆形，柱头2裂，粉红色。果序长达14厘米；蒴果圆锥形或长卵形，2瓣裂。花期3月，果期4月（河南、陕西）-5月（河北、山东）。
分布（Distribution）：分布广泛，以黄河流域中、下游为中心分布区，喜生于海拔1500米以下的温和平原地区。
用途（Use）：毛白杨材质好，生长快，寿命长，较耐千旱和盐碱，树姿雄壮，冠形优美，为各地群众所喜欢栽植的优良庭园绿化或行道树、也为华北地区速生用材造林树种，应大力推广。
引自中国植物志英文版：FOC Vol. 4 Page 146
Populus tomentosa Carrière, Rev. Hort. 1867: 340. 1867.
毛白杨 mao bai yang | Salicaceae | Populus
Trees to 30 m tall; trunk usually erect; bark at first dull gray, becoming grayish green to grayish white, later dark gray on basal part of trunk, furrowed, rough; crown conical to ovoid-globose, globose, or fastigiate. Lateral branches spreading, pendulous when old; branchlets at first gray tomentose, glabrescent. Buds ovoid, ovoid-globose, or subglobose, tomentulose. Leaves of short branchlets often smaller; petiole laterally flattened, slightly shorter than blade; leaf blade ovate or deltoid-ovate, 7-11 × 6.5-10.5 cm, abaxially tomentose when leaves unfold, glabrescent, adaxially dark green, shiny, base shallowly cordate to cordate or truncate, margin sinuate-dentate, apex acuminate. Long shoots with petiole 3-7 cm, compressed distally; leaf blade broadly ovate or deltoid-ovate, 10-15 × 8-13 cm, abaxially densely tomentose, glabrescent, adaxially dull green, smooth, base cordate or truncate, usually 2(-4)-glandular, margin with deeply coarse or sinuate teeth, apex shortly acuminate. Male catkin 10-14(-20) cm. Male flower: stamens 6-12. Female catkin 4-7 cm, to 14 cm in fruit. Female flower: ovary long ellipsoid; style pink, 2-lobed. Capsule conical or long ovoid, 2-valved. Fl. Mar, fr. Apr-May. 2n = 38*, 40*, 57*.
* Plains; near sea level to 1500 m. Anhui, Gansu, Hebei, Henan, Jiangsu, S Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang
Used for wood pulp, timber for construction, making farm tools, furniture, and matchwood; also commonly planted along streets and as an ornamental.
（责任编辑：徐晔春）
学名（Scientific Name）：Populus tomentosa Carrière
英文名（English Common Name）：Chinese white poplar
别名（Chinese Common Name）：大叶杨、响杨
异名（Synonym）：Populus pekinensis Henry Populus glabrata Dode
科属（Family & Genus）：杨柳科（Salicaceae）杨属
形态特征（Description）：乔木，高达30米。树皮幼时暗灰色，壮时灰绿色，渐变为灰白色，老时基部黑灰色，纵裂，粗糙，干直或微弯，皮孔菱形散生，或2-4连生；树冠圆锥形至卵圆形或圆形。侧枝开展，雄株斜上，老树枝下垂；小枝（嫩枝）初被灰毡毛，后光滑。芽卵形，花芽卵圆形或近球形，微被毡毛。长枝叶阔卵形或三角状卵形，长10-15厘米，宽8-13厘米，先端短渐尖，基部心形或截形，边缘深齿牙缘或波状齿牙缘，上面暗绿色，光滑，下面密生毡毛，后渐脱落；叶柄上部侧扁，长3-7厘米，顶端通常有2(3-4)腺点；短枝叶通常较小，长7-11厘米，宽6.5-10.5厘米（有时长达18厘米，宽15厘米），卵形或三角状卵形，先端渐尖，上面暗绿色有金属光泽，下面光滑，具深波状齿牙缘；叶柄稍短于叶片，侧扁，先端无腺点。雄花序长10-14(20)厘米，雄花苞片约具10个尖头，密生长毛，雄蕊6-12，花药红色；雌花序长4-7厘米，苞片褐色，尖裂，沿边缘有长毛；子房长椭圆形，柱头2裂，粉红色。果序长达14厘米；蒴果圆锥形或长卵形，2瓣裂。花期3月，果期4月（河南、陕西）-5月（河北、山东）。
分布（Distribution）：分布广泛，以黄河流域中、下游为中心分布区，喜生于海拔1500米以下的温和平原地区。
用途（Use）：毛白杨材质好，生长快，寿命长，较耐千旱和盐碱，树姿雄壮，冠形优美，为各地群众所喜欢栽植的优良庭园绿化或行道树、也为华北地区速生用材造林树种，应大力推广。
引自中国植物志英文版：FOC Vol. 4 Page 146
Populus tomentosa Carrière, Rev. Hort. 1867: 340. 1867.
毛白杨 mao bai yang | Salicaceae | Populus
Trees to 30 m tall; trunk usually erect; bark at first dull gray, becoming grayish green to grayish white, later dark gray on basal part of trunk, furrowed, rough; crown conical to ovoid-globose, globose, or fastigiate. Lateral branches spreading, pendulous when old; branchlets at first gray tomentose, glabrescent. Buds ovoid, ovoid-globose, or subglobose, tomentulose. Leaves of short branchlets often smaller; petiole laterally flattened, slightly shorter than blade; leaf blade ovate or deltoid-ovate, 7-11 × 6.5-10.5 cm, abaxially tomentose when leaves unfold, glabrescent, adaxially dark green, shiny, base shallowly cordate to cordate or truncate, margin sinuate-dentate, apex acuminate. Long shoots with petiole 3-7 cm, compressed distally; leaf blade broadly ovate or deltoid-ovate, 10-15 × 8-13 cm, abaxially densely tomentose, glabrescent, adaxially dull green, smooth, base cordate or truncate, usually 2(-4)-glandular, margin with deeply coarse or sinuate teeth, apex shortly acuminate. Male catkin 10-14(-20) cm. Male flower: stamens 6-12. Female catkin 4-7 cm, to 14 cm in fruit. Female flower: ovary long ellipsoid; style pink, 2-lobed. Capsule conical or long ovoid, 2-valved. Fl. Mar, fr. Apr-May. 2n = 38*, 40*, 57*.
* Plains; near sea level to 1500 m. Anhui, Gansu, Hebei, Henan, Jiangsu, S Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang
Used for wood pulp, timber for construction, making farm tools, furniture, and matchwood; also commonly planted along streets and as an ornamental.
（责任编辑：徐晔春）
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