合欢合欢，又名夜合树、马缨花、绒花树，古有“青裳”的雅号。为豆科落叶乔木。它树冠开阔，绿荫如伞，叶纤细如羽，红花成簇，秀丽别致。元代诗人袁桷就有诗《题玉堂合欢花初开》咏赞合欢。１形态特征合欢枝长开展，树冠常呈广伞形。树皮褐灰色或淡灰色，平滑。枝疏生，... Acacia Acacia, also known as Yeh Hop tree, Lanyu flowers, cashmere trees, the ancient “Green” Ya. Deciduous legume trees. It is open crown, shade, such as umbrella, leaf slender as feather, saffron clusters, beautiful and unique. Yuan Yuan poet Yuan 桷 there is a poem, “Tomb Yushu Acacia Flowers” Wing praise Acacia. 1 Morphological characteristics Acacia branches to carry out, the crown often wide umbrella-shaped. Bark brown or light gray, smooth. Sparse branches, ...