The durations of anther opening and closing of P.dunniana,P.caobangensis,P.daliensis and P.polyphylla var.yunnanensis were longer and that of P.iuquanensis and P.polyphyll a were shorter.

• 海南重楼、高平重楼、大理重楼和滇重楼花药开裂和关闭的持续时间较长,禄劝花叶重楼和多叶重楼的持续时间较短。