Fritillaria thunbergii is a flowering plant species in the lily family Liliaceae. It is native to Kazakhstan and in Xinjiang Province of western China, though cultivated in other places and naturalized in Japan and in other parts of China. Fritillaria thunbergii produces bulbs up to 30 mm in diameter. The stem is up to 80 cm tall. The flowers are pale yellow, sometimes with a purple tinge or purple markings. formerly included * Fritillaria thunbergii var. puqiensis (G.D.Yu & G.Y.Chen) P.K.Hsiao & S.C.Yu, now called Fritillaria monantha Migo