琅琊榆Ulmus chenmoui
中文名（Chinese Name）：琅琊榆
学名（Scientific Name）：Ulmus chenmoui Cheng
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：
科属（Family & Genus）：榆科（Ulmaceae）榆属
形态特征（Description）：落叶乔木，高达20米，胸径60厘米；树皮淡褐灰色，裂成不规则的长圆形薄片脱落；一年生枝幼时密被柔毛，后逐渐脱落，小枝无木栓翅及膨大的木栓层；冬芽卵圆形，芽鳞背面被覆部分有毛。叶宽倒卵形、长圆状倒卵形、长圆形或长圆状椭圆形，长6-18厘米，宽3-10厘米，先端短尾状或尾状渐尖，基部偏斜，楔形、圆或心脏形，叶面密生硬毛，粗糙，沿主脉凹陷处有柔毛，叶背密生柔毛；沿脉较密，边缘具重锯齿，侧脉每边15-21条；叶柄长1-1.5厘米，密被长柔毛。花在去年生枝上排成簇状聚伞花序。翅果窄倒卵形、长圆状倒卵形或宽倒卵形，长1.5-2.5厘米，宽1-1.7厘米，两面及边缘全有柔毛，或果核部分毛密、果翅毛疏或近无毛，果核部分位于翅果的中上部，上端接近缺口，宿存花被无毛，上端4裂，裂片边缘有毛，果梗长1-2毫米，被短毛。花果期3月下旬至4月。
分布（Distribution）：分布于安徽及江苏，生于海拔150-200米中性湿润粘土的阔叶林中及石炭岩缝中。
用途（Use）：木材坚实，纹理直，耐火用。可作家具、车辆、器具、室内装修等用材。
引自中国植物志英文版：FOC Vol. 5 Page 7
Ulmus chenmoui W. C. Cheng, Nanjing Forest. Inst. 1(1): 68. 1958.
琅琊榆 lang ya yu| Ulmaceae | Ulmus
Trees, to 20 m tall, d.b.h. to 50 cm, deciduous. Bark grayish brown, exfoliating in irregular oblong flakes. Branchlets densely pubescent when young, glabrescent, unwinged and without a corky layer. Winter buds ovoid; bud scales partly pubescent. Petiole 1-1.5 cm, densely villous; leaf blade broadly obovate, oblong-obovate, oblong, or oblong-elliptic, 6-18 × 3-10 cm, scabrous, abaxially densely pubescent, adaxially densely hirsute and pubescent along midvein, base oblique, margin doubly serrate, apex shortly caudate to caudate-acuminate; secondary veins 15-21 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth glabrous, apically 4-lobed. Samara narrowly obovate, oblong-obovate, or broadly obovate, 1.5-2.5 × 1-1.7 cm, pubescent; stalk 1-2 mm; perianth persistent. Seed at center or toward apex of samara. Fl. and fr. Mar-Apr.
* 100-200 m. Anhui (Chuxian), Jiangsu (Jurong).
Species 13 through 19 share many characters in common, and differ in relatively minor characters. There has been much disagreement in the past about species delimitation in this group.
（责任编辑：徐晔春）
学名（Scientific Name）：Ulmus chenmoui Cheng
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：
科属（Family & Genus）：榆科（Ulmaceae）榆属
形态特征（Description）：落叶乔木，高达20米，胸径60厘米；树皮淡褐灰色，裂成不规则的长圆形薄片脱落；一年生枝幼时密被柔毛，后逐渐脱落，小枝无木栓翅及膨大的木栓层；冬芽卵圆形，芽鳞背面被覆部分有毛。叶宽倒卵形、长圆状倒卵形、长圆形或长圆状椭圆形，长6-18厘米，宽3-10厘米，先端短尾状或尾状渐尖，基部偏斜，楔形、圆或心脏形，叶面密生硬毛，粗糙，沿主脉凹陷处有柔毛，叶背密生柔毛；沿脉较密，边缘具重锯齿，侧脉每边15-21条；叶柄长1-1.5厘米，密被长柔毛。花在去年生枝上排成簇状聚伞花序。翅果窄倒卵形、长圆状倒卵形或宽倒卵形，长1.5-2.5厘米，宽1-1.7厘米，两面及边缘全有柔毛，或果核部分毛密、果翅毛疏或近无毛，果核部分位于翅果的中上部，上端接近缺口，宿存花被无毛，上端4裂，裂片边缘有毛，果梗长1-2毫米，被短毛。花果期3月下旬至4月。
分布（Distribution）：分布于安徽及江苏，生于海拔150-200米中性湿润粘土的阔叶林中及石炭岩缝中。
用途（Use）：木材坚实，纹理直，耐火用。可作家具、车辆、器具、室内装修等用材。
引自中国植物志英文版：FOC Vol. 5 Page 7
Ulmus chenmoui W. C. Cheng, Nanjing Forest. Inst. 1(1): 68. 1958.
琅琊榆 lang ya yu| Ulmaceae | Ulmus
Trees, to 20 m tall, d.b.h. to 50 cm, deciduous. Bark grayish brown, exfoliating in irregular oblong flakes. Branchlets densely pubescent when young, glabrescent, unwinged and without a corky layer. Winter buds ovoid; bud scales partly pubescent. Petiole 1-1.5 cm, densely villous; leaf blade broadly obovate, oblong-obovate, oblong, or oblong-elliptic, 6-18 × 3-10 cm, scabrous, abaxially densely pubescent, adaxially densely hirsute and pubescent along midvein, base oblique, margin doubly serrate, apex shortly caudate to caudate-acuminate; secondary veins 15-21 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth glabrous, apically 4-lobed. Samara narrowly obovate, oblong-obovate, or broadly obovate, 1.5-2.5 × 1-1.7 cm, pubescent; stalk 1-2 mm; perianth persistent. Seed at center or toward apex of samara. Fl. and fr. Mar-Apr.
* 100-200 m. Anhui (Chuxian), Jiangsu (Jurong).
Species 13 through 19 share many characters in common, and differ in relatively minor characters. There has been much disagreement in the past about species delimitation in this group.
（责任编辑：徐晔春）
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