茅膏菜属（学名：Drosera），又名毛毡苔属，属于多年生草本植物，同属约有170多种，此属是在食虫植物中种类最多、分布最广的一群。茅膏菜的叶片为圆形，叶片边缘密布可分泌黏液的腺毛，当昆虫落上叶面时，即会被粘住。腺毛极为敏感，如有外物触及，即向内和向下运动，将虫紧压于叶面，当昆虫逐渐消化后，腺毛即恢复原状。

Drosera, commonly known as the sundews, is one of the largest genera of carnivorous plants, with at least 194 species. These members of the family Droseraceae lure, capture, and digest insects using stalked mucilaginous glands covering their leaf surfaces. The insects are used to supplement the poor mineral nutrition of the soil in which the plants grow. Various species, which vary greatly in size and form, can be found growing natively on every continent except Antarctica.