Maize Illustration showing male and female maize flowers Scientific classification Kingdom: Plantae Clade: Angiosperms Clade: Monocots Clade: Commelinids Order: Poales Family: Poaceae Genus: Zea Species: Z. mays Binomial name Zea mays L. Maize, also known as corn, is a cereal grain first domesticated by indigenous peoples in southern Mexico ...