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水黃皮Poongaoil Pongamia or Poonga-oil Tree (Shuihuangpi)

 

水黃皮
 
水黃皮的根系深,非常能耐風、耐鹽性特強,環境適應力強,故稱「九重吹」,也因樹性強健、耐乾旱、耐空氣汙染的特性,讓它成為防風林、行道樹及公園中常栽種的綠化樹種。
 
Poongaoil Pongamia trees (Shuihuangpi) have deep roots, and have strong endurance against wind and salt. They are therefore also called "Nine-Storied Wind" (Jiuchongfeng). Moreover, due to their strength and endurance against drought and air pollution, they are often used in windbreak forests, as shade trees, and as greening trees in parks.
Wild Poongaoil Pongamia primarily grow alongside rivers and creeks. Their fruit, which can float and be spread by water, are also called "Water-Flowed Beans" or "Wild Beans." The color of the tree's flowers is an elegant light-purple; they blossom at the beginning of summer or autumn. The fruits are flat and shaped like a long oval-shaped knife, and the pericarp is notably lignified, without any sarcocarp. The seeds and roots are poisonous, and will cause nausea and vomiting, giving rise to their use as an emetic.