During the late development,the apical cell did not divide and therefore the capitate glandular hair with one secretory cell formed if the stalk cell rapidly enlarged longitudinally.

• 以后的发育过程中，由于有的腺毛的柄细胞迅速分化，其顶细胞不再分裂，从而形成单个分泌细胞构成头部的头状腺毛；