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苦荞麦 Fagopyrum tataricum (L.) Gaertn.

4.苦荞麦(本草纲目)图版27: 1-2
    Fagopyrum tataricum (L.) Gaertn. Fruct. Sem. 2: 182. t. 119. f. 6. 1791; Meisn. in DC. Prodr. 14 (1): 144. 1856; Hook. f. Fl. Brit. Ind. 5: 55. 1886; 东北草本植物志2: 67. 1959; 湖北植物志1: 217.图291. 1976; Hara, Enum. Flow. Pl. Nep. 3:174.1982;西藏植物志1: 605. 1983; Borod. in Pl. Asiae Centr. 9: 121. 1989. ——Polygonum tataricum L. Sp. Pl. 34. 1753; Forb. et Hemsl. in Journ. Linn. Soc. Bot. 26: 350. 1891; Sam. in Hand.-Mazz. Symb. Sin. 7: 185. 1929; Stew. in Contr. Gray Herb. 88: 114.1930; Kung in Fl. Ill. N. Chine 5: 63. Pl. 27. 1936. 
     一年生草本。茎直立,高30-70厘米,分枝,绿色或微逞紫色,有细纵棱,一侧具乳头状突起,叶宽三角形,长2-7厘米,两面沿叶脉具乳头状突起,下部叶具长叶柄,上部叶较小具短柄;托叶鞘偏斜,膜质,黄褐色,长约5毫米。花序总状,顶生或腋生,花排列稀疏;苞片卵形,长2-3毫米,每苞内具2-4花,花梗中部具关节;花被5深裂,白色或淡红色,花被片椭圆形,长约2毫米;雄蕊8, 比花被短;花柱3,短,柱头头状。瘦果长卵形,长5-6毫米,具3棱及3条纵沟,上部棱角锐利,下部圆钝有时具波状齿,黑褐色,无光泽,比宿存花被长。花期6-9月,果期8-10月。
    我国东北、华北、西北、西南山区有栽培,有时为野生。生田边、路旁、山坡、河谷,海拔500-3900米。分布于亚洲、欧洲及美洲。
    种子供食用或作饲料。根供药用,理气止痛,健脾利湿。

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