叶底珠属（学名：Securinega）是大戟科下的一个属，为落叶灌木植物。该属共有25种，分布于温带和亚热带地区。

Securinega is a genus of plants in the family Phyllanthaceae, first described as a genus in 1789. As presently conceived, the genus is native to Madagascar and the Mascarene Islands in the Indian Ocean. It the past, it was considered to be much more widespread, thus explaining the long list of species formerly included.