The alkaloids of the epigeal part and roots of the plant Glaucium fimbrilligerum have been studied. A total of 18 alkaloids has been isolated, of which epiglaufidine proved to be new, and its structure has been established. Columbamine has been isolated from the genus Glaucium for the first time, and magnoflorine and stilopine α-hydroxymethylate from this species of plant for the first time. © 1984 Plenum Publishing Corporation.