血苋属（学名：Iresine）是苋科下的一个属，为草本或亚灌木植物。该属共有约70种，分布于美洲和非洲及大洋洲。

Iresine is a genus of flowering plants in the amaranth family, Amaranthaceae. It contains 20 to 25 species, all of which are native to the American tropics. The generic name is derived from the Greek word εριος (erios), meaning "wooly", referring to the trichome-covered flowers. Bloodleaf is a common name for those species that have colored foliage, and these are often cultivated as ornamental plants. Some species are additives to versions of the hallucinogenic drink Ayahuasca.