形態
多年生草本;根細長,部分呈連珠狀或棒狀,棕色外皮;莖直立,下部木質化;線狀披針形或狹披針形的葉子互生,至莖頂時約5~9片輪生,有相同數目的射出枝;夏秋開花,具有大戟屬特有的杯狀花序。
分佈
藥用
中醫上以根入藥,性寒、味苦,有毒,功能瀉水逐飲,主治水腫脹滿、痰飲積聚等症。
參考文獻
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