杜鹃花Rhododendron simsii Planch,又名映山红、山石榴等,为杜鹃花科杜鹃花属落叶、半常绿或常绿灌木,我国著名观赏花卉。植株分枝细而多,叶卵状椭圆形或卵形;花2~6朵簇生于枝顶,花冠颜色多样,有玫瑰红、鲜红、粉红、粉白、黄白等多种颜色。其主产地为滇、川、藏三省区的横断山脉,在长江流域及西南诸省多为山间林下灌丛,全国各地均 Rhododendron Rhododendron simsii Planch, also known as azalea, pomegranate Hill, for Rhododendron Branch Rhododendron is a deciduous, semi-evergreen or evergreen shrub, China’s famous ornamental flowers. Plant branches more and more leaves oval or oval; flowers 2 to 6 clusters are born in the branches, corolla color diversity, rose red, red, pink, white powder, yellow and white and other colors. Its main producing area is the Hengduan Mountains in the three provinces of Yunnan, Sichuan and Tibet. In the Yangtze River valley and the southwestern provinces, it is mostly under-lying shrubs in the mountains.