脱皮榆Ulmus lamellosa
中文名(Chinese Name):脱皮榆
学名(Scientific Name):Ulmus lamellosa Wang et S. L. Chang ex L. K. Fu
英文名(English Common Name):
别名(Chinese Common Name):沙包榆
异名(Synonym):
科属(Family & Genus):榆科Ulmaceae榆属Ulmus
形态特征(Description):落叶小乔木,高8-12米,胸径15-20厘米;树皮灰色或灰白色,不断的裂成不规则薄片脱落,内(新)皮初为淡黄绿色,后变为灰白色或灰色,不久又挠裂脱落,干皮上有明显的棕黄色皮孔,常数个皮孔排成不规则的纵行;幼枝密生伸展的腺状毛或柔毛,淡绿色或向阳面带淡紫红色,二、三年生枝淡黄褐色、淡褐色或灰褐色,无毛;小枝上无扁平而对生的木栓翅,仅在萌生枝的基部有时具周围膨大而不规则纵裂的木栓层。冬芽卵圆形或近圆形,芽鳞背面多少被毛,稀外层芽鳞近无毛,边缘有毛。托叶条状披针形,被毛,早落。叶倒卵形,长5-10厘米,宽2.5-5.5厘米,先端尾尖或骤凸,基部楔形或圆,稍偏斜,叶面粗糙,密生硬毛或有毛迹,叶背微粗糙,幼时密生短毛,脉腋有簇生毛,中脉近基部与叶柄被伸展的腺状毛或柔毛,边缘兼有单锯齿与重锯齿,叶柄长3-8毫米,幼时上面密生短毛。花常自混合芽抽出,春季与叶同时开放。翅果常散生于新枝的近基部,稀2-4个簇生于去年生枝上,圆形至近圆形,两面及边缘有密毛,长2.5-3.5厘米,宽2-2.7厘米,顶端凹,缺裂先端内曲,柱头喙状,柱头面密生短毛,基部近对称或微偏斜,子房柄较短,果核位于翅果的中部;宿存花被钟状,被短毛,花被片6,边缘有长毛,残存的花丝明显的伸出花被;果梗长3-4毫米,密生伸展的腺状毛与柔毛。
分布(Distribution):分布河北东陵、涞水、涿鹿,河南济源、辉县,山西沁水等地。
用途(Use):
引自中国植物志英文版:FOC Vol. 5 Page 4
Ulmus lamellosa C. Wang & S. L. Chang, Acta Phytotax. Sin. 17(1): 47. 1979.
脱皮榆 tuo pi yu| Ulmaceae | Ulmus
Trees, 8-12 m tall, d.b.h. 15-20 cm, deciduous. Bark gray to grayish white, exfoliating in irregular flakes. Branchlets brown to grayish brown, glabrous, unwinged, sometimes with a corky layer. Winter buds ovoid-orbicular to ± orbicular; bud scales ± pubescent, margin ciliate. Stipules linear to lanceolate, pubescent, caducous. Petiole 3-8 mm; leaf blade obovate, 5-10 × 2.5-5.5 cm, abaxially ± scabrous and densely pubescent when young, adaxially scabrous and densely hirsute or with trichome scars, base ± oblique, margin simply or doubly serrate with blunt teeth, apex caudate to cuspidate. Flowers from mixed buds, appearing at same time as leaves. Perianth campanulate, 6-lobed, pubescent. Samara usually scattered near base of branchlets, orbicular to ± orbicular, 2.5-3.5 × 2-2.7 cm, densely pubescent, apically concave; stigmas beak-shaped, densely pubescent; stalk 3-4 mm, densely pubescent or with elongate glandular hairs; perianth persistent. Seed at center of samara. Fl. Mar-Apr, fr. Apr-May.
* Mountain ravines; ca. 1200 m. Hebei, Henan, Nei Mongol, Shanxi.
This species is cultivated in Beijing and Liaoning (Xiongyuecheng).
(责任编辑:徐晔春)
学名(Scientific Name):Ulmus lamellosa Wang et S. L. Chang ex L. K. Fu
英文名(English Common Name):
别名(Chinese Common Name):沙包榆
异名(Synonym):
科属(Family & Genus):榆科Ulmaceae榆属Ulmus
形态特征(Description):落叶小乔木,高8-12米,胸径15-20厘米;树皮灰色或灰白色,不断的裂成不规则薄片脱落,内(新)皮初为淡黄绿色,后变为灰白色或灰色,不久又挠裂脱落,干皮上有明显的棕黄色皮孔,常数个皮孔排成不规则的纵行;幼枝密生伸展的腺状毛或柔毛,淡绿色或向阳面带淡紫红色,二、三年生枝淡黄褐色、淡褐色或灰褐色,无毛;小枝上无扁平而对生的木栓翅,仅在萌生枝的基部有时具周围膨大而不规则纵裂的木栓层。冬芽卵圆形或近圆形,芽鳞背面多少被毛,稀外层芽鳞近无毛,边缘有毛。托叶条状披针形,被毛,早落。叶倒卵形,长5-10厘米,宽2.5-5.5厘米,先端尾尖或骤凸,基部楔形或圆,稍偏斜,叶面粗糙,密生硬毛或有毛迹,叶背微粗糙,幼时密生短毛,脉腋有簇生毛,中脉近基部与叶柄被伸展的腺状毛或柔毛,边缘兼有单锯齿与重锯齿,叶柄长3-8毫米,幼时上面密生短毛。花常自混合芽抽出,春季与叶同时开放。翅果常散生于新枝的近基部,稀2-4个簇生于去年生枝上,圆形至近圆形,两面及边缘有密毛,长2.5-3.5厘米,宽2-2.7厘米,顶端凹,缺裂先端内曲,柱头喙状,柱头面密生短毛,基部近对称或微偏斜,子房柄较短,果核位于翅果的中部;宿存花被钟状,被短毛,花被片6,边缘有长毛,残存的花丝明显的伸出花被;果梗长3-4毫米,密生伸展的腺状毛与柔毛。
分布(Distribution):分布河北东陵、涞水、涿鹿,河南济源、辉县,山西沁水等地。
用途(Use):
引自中国植物志英文版:FOC Vol. 5 Page 4
Ulmus lamellosa C. Wang & S. L. Chang, Acta Phytotax. Sin. 17(1): 47. 1979.
脱皮榆 tuo pi yu| Ulmaceae | Ulmus
Trees, 8-12 m tall, d.b.h. 15-20 cm, deciduous. Bark gray to grayish white, exfoliating in irregular flakes. Branchlets brown to grayish brown, glabrous, unwinged, sometimes with a corky layer. Winter buds ovoid-orbicular to ± orbicular; bud scales ± pubescent, margin ciliate. Stipules linear to lanceolate, pubescent, caducous. Petiole 3-8 mm; leaf blade obovate, 5-10 × 2.5-5.5 cm, abaxially ± scabrous and densely pubescent when young, adaxially scabrous and densely hirsute or with trichome scars, base ± oblique, margin simply or doubly serrate with blunt teeth, apex caudate to cuspidate. Flowers from mixed buds, appearing at same time as leaves. Perianth campanulate, 6-lobed, pubescent. Samara usually scattered near base of branchlets, orbicular to ± orbicular, 2.5-3.5 × 2-2.7 cm, densely pubescent, apically concave; stigmas beak-shaped, densely pubescent; stalk 3-4 mm, densely pubescent or with elongate glandular hairs; perianth persistent. Seed at center of samara. Fl. Mar-Apr, fr. Apr-May.
* Mountain ravines; ca. 1200 m. Hebei, Henan, Nei Mongol, Shanxi.
This species is cultivated in Beijing and Liaoning (Xiongyuecheng).
(责任编辑:徐晔春)
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