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波叶大黄Rheum rhabarbarum

时间:2013-10-30 13:57来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):波叶大黄 学名( Scientific Name ): Rheum rhabarbarum L. 英文名( English Common Name ): garden rhubarb 别名( Chinese Common Name ): 异名( Synonym ): Rheum undulatum Linn. Rheum undulatum var. longifolium
中文名(Chinese Name):波叶大黄
学名(Scientific Name):Rheum rhabarbarum L.
英文名(English Common Name):garden rhubarb
别名(Chinese Common Name):
异名(Synonym):Rheum undulatum Linn.  Rheum undulatum var. longifolium C. Y. Cheng et Kao  Rheum franzenbachii Münt.  Rheum franzenbachii var. mongolicum Munter  Rhabarbarum verum Garsault  Rheum undulalum L. 
科属(Family & Genus):蓼科(Polygonaceae)大黄属
形态特征(Description):高大草本,高1-1.5米,茎粗壮,中空,光滑无毛,只近节部稍具糙毛。基生叶大,叶片三角状卵形或近卵形,长30-40厘米,宽20-30厘米,顶端钝尖或钝急尖,常扭向一侧,基部心形,边缘具强皱波,基出脉5-7条,于叶下面凸起,叶上面深绿色,光滑无毛或在叶脉处具稀疏短毛,下面浅绿色,被毛;叶柄粗壮,宽扁半圆柱状,通常短于叶片,被有短毛;上部叶较小多三角形或卵状三角形。大型圆锥花序,花白绿色,5-8朵簇生;花梗长2.5-4毫米,关节位于下部;花被片不开展,外轮3片稍小而窄,内轮3片稍大,椭圆形,长近2毫米;雄蕊与花被等长;子房略为菱状椭圆形,花柱较短,向外反曲,柱头膨大,较平坦。果实三角状卵形到近卵形,长8-9毫米,宽6.5-7.5毫米,顶端钝,基部心形,翅较窄,宽1.5-2毫米,纵脉位于翅的中间部分。种子卵形,棕褐色,稍具光泽。花期6月,果期7月以后。
分布(Distribution):产黑龙江、吉林及内蒙古,生于海拔1000米左右山地。俄罗斯、蒙古也有分布。
引自中国植物志英文版:FOC Vol. 5 Page 343     
Rheum rhabarbarum Linnaeus, Sp. Pl. 1: 372. 1753.
波叶大黄 bo ye da huang| Polygonaceae  | Rheum
Rheum franzenbachii Münter; R. franzenbachii var. mongolium Münter; R. undulatum Linnaeus; R. undulatum var. longifolium C. Y. Cheng & T. C. Kao.
Herbs large, 50-150 cm tall. Stem stout, hollow, glabrous, or pilose at nodes. Petiole of basal leaf stout, usually shorter than blade, pubescent; leaf blade light green or dark purple-red abaxially, dark green adaxially, triangular-ovate, subovate, broadly cordate, or narrowly triangular, large, 12-40(-57) × 10-30(-61) cm, abaxially pubescent, adaxially glabrous or sparsely pubescent near veins, basal veins 5-7, base cordate, margin crispate or sinuate, apex obtuse or acute. Stem leaves smaller, triangular or ovate-triangular. Panicle large, jointed at lower part. Flowers 3-8-fascicled, 2.5-4 mm. Tepals 6, not spreading, white-green or yellow-white, outer 3 smaller, inner 3 very broad to orbicular, ca. 2 mm. Ovary broadly ellipsoid to oblong-ellipsoid; style short; stigma inflated. Fruit triangular-ovoid to oblong-ellipsoid; wings narrow, 1.5-2 mm. Seeds brown, ovoid or ovoid-ellipsoid, ca. 3 mm. Fl. Jun, fr. after Jul. 2n = 44.
Slopes; 1000-1600 m. Hebei, Heilongjiang, Hubei, Jilin, Nei Mongol, Shanxi [Mongolia, Russia (E Siberia); cultivated in Europe].
 


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