Monascus purpureus (syn. M. albius, M. anka, M. araneosus, M. major, M. rubiginosus, and M. vini; Chinese: 红曲菌, pinyin: hóng qū jùn, lit. "red yeast") is a species of mold that is purplish-red in color. It is also known by the names ang-khak rice mold, corn silage mold, maize silage mold, and rice kernel discoloration.