黑钩叶属（学名：Leptopus），又称雀舌木属，是大戟科下的一个属，为多年生草本或灌木植物。该属共有20种以上，分布于热带至温带地区。

Leptopus, the maidenbushes, are a group of plants in the flowering plant family Phyllanthaceae first described as a genus in 1836. As presently constituted, is native to southern Asia from the Caucasus east to China and Maluku.

Leptopus is one of eight genera in the tribe Poranthereae and comprises 9 species. It is the sister of Actephila. The type species is Leptopus cordifolius. The name is derived from two Greek words, leptos, "thin, slender, or small", and pous, "foot", a reference to slender pedicels.