常綠大喬木,樹幹挺拔,樹高可達20公尺以上,直徑30至60公分,全株平滑,樹皮為淡褐色,有粗裂紋或剝皮現象,小枝有皮孔,有多數分枝,枝條直立或斜上昇,葉痕略呈倒心形或近於圓形,葉互生,葉柄長,光滑無毛,為偶數羽狀複葉,小葉5至6對,偶有4對或7對,斜披針形或長橢圓狀披針形,先端銳尖,基部鈍或圓而歪斜,薄革質或紙質,全緣,表面有光澤,綠色,背面淡綠色,花小形,多數,生長於枝條先端葉腋,呈聚繖花序,由多數聚繖花序集合成一大型的圓錐花序,花萼淺杯狀,花瓣5片,倒卵形,雄蕊10片,花絲合生為雄蕊筒,為圓筒形,較花瓣短,蒴果碩大長卵形,先端漸尖,成熟後木質化,自基部裂成5瓣,內有紅褐色的翅果,便像直昇機螺旋漿般隨風旋轉飄落下來,有助於種子傳播。
樹姿優美,枝葉茂密,遮蔭效果好,是優良的庭園樹、行道樹、庭園樹、行道樹;因木材呈桃花色澤而得名,材質堅硬不易彎曲變形耐磨損,很容易加工製造,可製傢俱、器具、作建材及雕刻材料。
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