The Chenopodioideae are a subfamily of the flowering plant family Amaranthaceae in the APG III system, which is largely based on molecular phylogeny, but were included – together with other subfamilies – in the family Chenopodiaceae, or goosefoot family, in the Cronquist system.
Food species comprise spinach (Spinacia oleracea), Good King Henry (Blitum bonus-henricus), several Chenopodium species (quinoa, kañiwa, fat hen), orache (Atriplex spp.), and epazote (Dysphania ambrosioides). The name is Greek for goosefoot, the common name of a genus of plants having small greenish flowers.