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(一)形状:银合欢属含羞草科银合欢属。是一种落叶的小乔木或灌木,高2～6米,少直干,多分枝,枝向四周扩展。偶数羽状复叶,有羽片4～8对,长5～9厘米。轴上披柔毛,小叶10～15对,长椭圆形,长7～14毫米,叶端短尖。头状花序腋生,单生,具长柄,球形,花多而密集,直径2～3厘米。花白色,微有香气。荚果扁平,带状,先端突尖,每一关状花序中通常仅有数个或十余个能发
(A) shape: Acacia mimosa Branch of Acacia. Is a deciduous tree or shrub, 2 to 6 meters high, less straight dry, more branches, branches to expand around. Even pinnate, with pinnae 4 to 8 pairs, 5 to 9 cm long. Shaft drapery, leaflets 10 to 15 pairs, long oval, 7 to 14 mm long, short tip of the leaf tip. Axillary axillary, solitary, with long handle, spherical, flowers and more dense, diameter of 2 to 3 cm. Flowers white, slightly scent The pods are flat, banded, apex pointed, usually only a few or more than ten per hairy