After an inflorescence branch primordium is shaped,first it produces a terminal flower prmordium,later a bract and continually an axillary bud primordium and an accessory bud primordium in the axill of the bract.

• 花序分枝原基形成后先产生分枝的顶花原基,然后产生苞叶原基,苞叶原基腋内再依次分化出腋芽原基和副芽原基,如此反复进行多次。