Abstract
In addition to the hitherto known alkaloids of Dicentra formosa (protopine, dicentrine), the present investigation has disclosed the presence of glaucine and corytuberine as well as alkaloid δ which had previously been obtained from D. eximia. Heyl's alkaloid of unknown identity (m.p. 142 °C.) proved to be corydine. Incidentally, the author's eximine was also identified with corydine.

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