Herb of central and southern europe having purple florets .
欧洲中部和南部草本植物，有紫色小花。
Florets disarticulating from above downward , falling together with the rachilla joints .
脱节从在上面向下的小花，下降以及具关节的小穗轴。
Why are the florets in a sunflower arranged in a double spiral ?
向日葵花瓣为什么是双螺旋排列？
Class 11 spider : long tubular ray florets which may coil or hook at the ends .
第十一型蜘蛛型：小花长管状，先端盘绕或弯曲。
The phenomenon of ear barren tip composed from aborted kernels and florets without fecundation at the tip of ear is an important factor causing yield losses .
