1.【植】伞房花序
1.a flat flower head consisting of flowers whose stalks grow from different points on the flower stem but reach approximately the same height
1.A perennial plant(Eupatorium coelestinum) of the southeast and central United States, having corymbs of small blue flowers.
雾龙泽兰一种常绿植物，（破坏草泽兰属）产于美国东南及中部，有青紫色小的伞状花序
2.Inflorescences usually with conspicuous bracts; flowers solitary to several in short racemes or corymbs.
花序通常具明显的苞片；花单生到数枚为短的总状花序或伞房花序。
3.Leaves opposite. Corymbs short pedunculate or sessile, axillary, often fascicled.
叶对生伞房花序短的有花序梗或者无柄，腋生，经常是簇生。
4.Corymbs several to many flowered, bracteate or ebracteate, simple or compound, not elongated in fruit.
伞房花序数枚到多数开花，具苞片或者无苞片，简单或者化合物，不在果期拉长。
5.Flowers many in corymbs, rarely solitary, bisexual, longer than subtending leaf.
在伞房花序，很少单生，阴阳人，长于苞叶里的花很多。
6.Flowers axillary, in racemes, corymbs, or fascicles, or solitary.
腋生的花，在总状花序内，，或束簇，或单生。
7.Flowers solitary or arranged in broad corymbs, axillary.
花单生或在宽的伞房花序里安排，腋生。
8.Corymbs terminal on short, lateral branchlets, compound, dense, many flowered;
在短，横向的小枝上末端的伞房花序，化合物，浓，多花的；