On basis of the facts that all tubiform petal only occurs in the highflower of prolification flower ; and except the tubiform petal , the rest of the highflower petals always have the transforming development carpellary disc in the dorsal base ; as well as there are distinctive shape and anatomy structure , a viewpoint that the tubiform petal corns from the together petaloid developing of carpel and carpellary disc has been put forward . furthermore , the jointly petaloid development process and feature of the tub 基于筒状花瓣仅仅出现在部分台阁化程度较高的台阁型花的上方花中，而且在上方花中多数过渡态花瓣背面的基部，常常出现形状和大小各异的瓣化了的房衣，以及筒状花瓣横切面特殊的形态和细胞组织特征，提出筒状花瓣是心皮和房衣组织原细胞共同分裂瓣化并联合发育形成的观点。
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