形态
落叶灌木，喜光而耐寒，高2～3米。卵形的叶子对生，缘疏生锯齿，基出3～5大脉，两面无毛。夏季开乳白色花，5～9朵成总状花序；微有芳香；暗黄绿色花萼。陀螺形的蒴果，顶端有宿萼，果期8～10月。
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参考资料
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