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金银花(Lonicera japonica Thunb),别名双花、银花、忍冬花。是忍冬科多年生绕缠性攀援小灌木、植株蔓生,多分枝;茎细而坚韧,髓部中空多分隔。基枝褐色至赤褐色,全株密生柔毛和腺毛。叶对生,宽披针形,卵形至卵状长椭圆形,全缘,长3～8厘米,先端尖或渐尖;基部圆形或近心形,幼时两面密生短柔毛,以后渐表面光滑无毛;叶柄长0.5厘米左右。总花梗单生于叶腋,花对生;苞片叶状,长达2厘米;萼筒无毛;花冠长3～4厘米,初开白色略带紫色后转黄色,或一朵白色一朵黄色,内具紫斑,芳香。浆果近球形,黑色,每果含4～5粒种子。
Lonicera japonica Thunb, alias double flower, silver flower, honeysuckle flower. Perennial Littoral Branch is a perennial entangled climbing small shrubs, plant vine, multi-branched; stem thin and tough, medullary hollow multi-separated. Base branch brown to auburn, whole plant dense pilose and glandular hairs. Leaves opposite, broadly lanceolate, ovate to ovate-oblong, entire, 3 to 8 cm long, apex acute or acuminate; base rounded or subcylindrical, both surfaces densely pubescent when young, later Gradually smooth glabrous; petiole length of about 0.5 cm. Total pedicel solitary in leaf axils, flowers opposite; bracts leaflike, up to 2 cm; calyx tube glabrous; corolla long 3 to 4 cm, initially turned white purplish yellow to yellow, or a white one yellow , With purple spots, aroma. Berry nearly spherical, black, each containing 4 to 5 seeds.