Artemisia dracunculus shoot tip of the flower bud differentiation in accordance with the changes in the pattern of growth cone can be divided into three periods: spend axis of differentiation, differentiation and flower inflorescence organ differentiation stage. 龙蒿的花芽分化根据茎尖生长锥的形态变化可以分为为3个时期:花轴分化期、花序分化期和花器官分化期。