榔榆Ulmus parvifolia
中文名（Chinese Name）：榔榆
学名（Scientific Name）：Ulmus parvifolia Jacq.
英文名（English Common Name）：Chinese elm
别名（Chinese Common Name）：小叶榆
异名（Synonym）：Planera parvifolia (Jacq.) Sweet Ulmus campestris var. chinensis Loudon Ulmus shirasawana Daveau Ulmus sieboldii Daveau Ulmus coreana Nakai Microptelea parvifolia (Jacq.) Spach Ulmus chinensis Pers. Ulmus sieboldii f. shirasawana (Daveau) Nakai
科属（Family & Genus）：榆科（Ulmaceae）榆属
形态特征（Description）：落叶乔木，或冬季叶变为黄色或红色宿存至第二年新叶开放后脱落，高达25米，胸径可达1米；树冠广圆形，树干基部有时成板状根，树皮灰色或灰褐，裂成不规则鳞状薄片剥落，露出红褐色内皮，近平滑，微凹凸不平；当年生枝密被短柔毛，深褐色；冬芽卵圆形，红褐色，无毛。叶质地厚，披针状卵形或窄椭圆形，稀卵形或倒卵形，中脉两侧长宽不等，长1.7-8（常2.5-5)厘米，宽0.8-3（常1-2)厘米，先端尖或钝，基部偏斜，楔形或一边圆，叶面深绿色，有光泽，除中脉凹陷处有疏柔毛外，余处无毛，侧脉不凹陷，叶背色较浅，幼时被短柔毛，后变无毛或沿脉有疏毛，或脉腋有簇生毛，边缘从基部至先端有钝而整齐的单锯齿，稀重锯齿（如萌发枝的叶），侧脉每边10-15条，细脉在两面均明显，叶柄长2-6毫米，仅上面有毛。花秋季开放，3-6数在叶腋簇生或排成簇状聚伞花序，花被上部杯状，下部管状，花被片4, 深裂至杯状花被的基部或近基部，花梗极短，被疏毛。翅果椭圆形或卵状椭圆形，长10-13毫米，宽6-8毫米，除顶端缺口柱头面被毛外，余处无毛，果翅稍厚，基部的柄长约2毫米，两侧的翅较果核部分为窄，果核部分位于翅果的中上部，上端接近缺口，花被片脱落或残存，果梗较管状花被为短，长1-3毫米，有疏生短毛。花果期8-10月。
分布（Distribution）：生华北以南大部分省区，生于平原、丘陵、山坡及谷地。日本、朝鲜也有分布。
用途（Use）：边材淡褐色或黄色，心材灰褐色或黄褐色，材质坚韧，纹理直，耐水湿，可供家具、车辆、造船、器具、农具、油榨、船橹等用材。树皮纤维纯细，杂质少，可作蜡纸及人造棉原料，或织麻袋、编绳索，亦供药用。可选作造林树种。
引自中国植物志英文版：FOC Vol. 5 Page 9
Ulmus parvifolia Jacquin, Pl. Hort. Schoenbr. 3: 262. 1798.
榔榆 lang yu| Ulmaceae | Ulmus
Microptelea parvifolia (Jacquin) Spach; Planera parvifolia (Jacquin) Sweet; Ulmus campestris Linnaeus var. chinensis Loudon; U. chinensis Persoon; U. coreana Nakai; U. japonica Siebold; U. sieboldii Daveau; Ulmus shirasawana Daveau.
Trees, to 25 m tall, d.b.h. to 100 cm, deciduous. Crown broadly orbicular. Bark gray to grayish brown, ± smooth, exfoliating into irregular scale-like flakes. Branchlets dark brown, densely pubescent when young, never winged. Winter buds reddish brown, ovoid-orbicular, glabrous. Petiole 2-6 mm, pubescent; leaf blade lanceolate-ovate to narrowly elliptic, lamina on two sides of midvein unequal in length and width, 2.5-5 × 1-2 cm, thick, abaxially pea green and pubescent when young, adaxially dark green, lustrous, and pubescent only on midvein, base oblique, margin obtusely and irregularly simply serrate, apex acute to obtuse; midvein depressed; secondary veins 10-15 on each side of midvein. Inflorescences fascicled cymes, 3-6-flowered. Pedicel very short, pubescent. Perianth funnelform; tepals 4. Samaras tan to brown, occasionally dark red-brown, elliptic to ovate-elliptic, 10-13 × 6-8 mm, glabrous except for pubescence on stigmatic surface in notch; stalk 1-3 mm, shorter than perianth, sparsely pubescent; perianth persistent or tardily deciduous. Seed at center or toward apex of samara. Fl. and fr. Aug-Oct. 2n = 28.
Below 800 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Zhejiang [India, Japan, N Korea, Vietnam].
（责任编辑：徐晔春）
学名（Scientific Name）：Ulmus parvifolia Jacq.
英文名（English Common Name）：Chinese elm
别名（Chinese Common Name）：小叶榆
异名（Synonym）：Planera parvifolia (Jacq.) Sweet Ulmus campestris var. chinensis Loudon Ulmus shirasawana Daveau Ulmus sieboldii Daveau Ulmus coreana Nakai Microptelea parvifolia (Jacq.) Spach Ulmus chinensis Pers. Ulmus sieboldii f. shirasawana (Daveau) Nakai
科属（Family & Genus）：榆科（Ulmaceae）榆属
形态特征（Description）：落叶乔木，或冬季叶变为黄色或红色宿存至第二年新叶开放后脱落，高达25米，胸径可达1米；树冠广圆形，树干基部有时成板状根，树皮灰色或灰褐，裂成不规则鳞状薄片剥落，露出红褐色内皮，近平滑，微凹凸不平；当年生枝密被短柔毛，深褐色；冬芽卵圆形，红褐色，无毛。叶质地厚，披针状卵形或窄椭圆形，稀卵形或倒卵形，中脉两侧长宽不等，长1.7-8（常2.5-5)厘米，宽0.8-3（常1-2)厘米，先端尖或钝，基部偏斜，楔形或一边圆，叶面深绿色，有光泽，除中脉凹陷处有疏柔毛外，余处无毛，侧脉不凹陷，叶背色较浅，幼时被短柔毛，后变无毛或沿脉有疏毛，或脉腋有簇生毛，边缘从基部至先端有钝而整齐的单锯齿，稀重锯齿（如萌发枝的叶），侧脉每边10-15条，细脉在两面均明显，叶柄长2-6毫米，仅上面有毛。花秋季开放，3-6数在叶腋簇生或排成簇状聚伞花序，花被上部杯状，下部管状，花被片4, 深裂至杯状花被的基部或近基部，花梗极短，被疏毛。翅果椭圆形或卵状椭圆形，长10-13毫米，宽6-8毫米，除顶端缺口柱头面被毛外，余处无毛，果翅稍厚，基部的柄长约2毫米，两侧的翅较果核部分为窄，果核部分位于翅果的中上部，上端接近缺口，花被片脱落或残存，果梗较管状花被为短，长1-3毫米，有疏生短毛。花果期8-10月。
分布（Distribution）：生华北以南大部分省区，生于平原、丘陵、山坡及谷地。日本、朝鲜也有分布。
用途（Use）：边材淡褐色或黄色，心材灰褐色或黄褐色，材质坚韧，纹理直，耐水湿，可供家具、车辆、造船、器具、农具、油榨、船橹等用材。树皮纤维纯细，杂质少，可作蜡纸及人造棉原料，或织麻袋、编绳索，亦供药用。可选作造林树种。
引自中国植物志英文版：FOC Vol. 5 Page 9
Ulmus parvifolia Jacquin, Pl. Hort. Schoenbr. 3: 262. 1798.
榔榆 lang yu| Ulmaceae | Ulmus
Microptelea parvifolia (Jacquin) Spach; Planera parvifolia (Jacquin) Sweet; Ulmus campestris Linnaeus var. chinensis Loudon; U. chinensis Persoon; U. coreana Nakai; U. japonica Siebold; U. sieboldii Daveau; Ulmus shirasawana Daveau.
Trees, to 25 m tall, d.b.h. to 100 cm, deciduous. Crown broadly orbicular. Bark gray to grayish brown, ± smooth, exfoliating into irregular scale-like flakes. Branchlets dark brown, densely pubescent when young, never winged. Winter buds reddish brown, ovoid-orbicular, glabrous. Petiole 2-6 mm, pubescent; leaf blade lanceolate-ovate to narrowly elliptic, lamina on two sides of midvein unequal in length and width, 2.5-5 × 1-2 cm, thick, abaxially pea green and pubescent when young, adaxially dark green, lustrous, and pubescent only on midvein, base oblique, margin obtusely and irregularly simply serrate, apex acute to obtuse; midvein depressed; secondary veins 10-15 on each side of midvein. Inflorescences fascicled cymes, 3-6-flowered. Pedicel very short, pubescent. Perianth funnelform; tepals 4. Samaras tan to brown, occasionally dark red-brown, elliptic to ovate-elliptic, 10-13 × 6-8 mm, glabrous except for pubescence on stigmatic surface in notch; stalk 1-3 mm, shorter than perianth, sparsely pubescent; perianth persistent or tardily deciduous. Seed at center or toward apex of samara. Fl. and fr. Aug-Oct. 2n = 28.
Below 800 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Zhejiang [India, Japan, N Korea, Vietnam].
（责任编辑：徐晔春）
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