Erythronium mesochoreum (prairie fawn lily or midland fawnlily) is a plant species in the lily family, native to the US states of Illinois, Iowa, Indiana, Nebraska, Kansas, Missouri, Oklahoma, Texas and Arkansas.Erythronium mesochoreum forms round to egg-shaped bulbs up to 25 mm long. Leaves are elliptic to lanceolate, up to 14 cm long. Scape is up to 15 cm tall, bearing only one flower.