Corydalis cheilanthifolia Hemsl. (Fumariaceae, genus Corydalis, subsect. Strictae Fedde) is a perennial herb, distributed in central China (1). C. cheilanthifolia is common in botanical gardens, and is also cultivated as a garden plant. The alkaloids isolated from it (2) were berberine, (—)-canadine, (—)-cheilanthifoline, (—)-corypalmine, (—)- and (±)-stylopine, allocryptopine and protopine. From the aerial parts of C. cheilanthifolia, we isolated 0.56% of the total alkaloids, i. e. berberine, coptisine, protopine, ophiocarpine, (—)-canadine, aallocryptopine, (—)133-hydroxystylopine, (—)--canadine methohydroxide, stylopine, sanguinarine and, in addition, trans-ferulic acid (4-hydroxy-3 methoxycinnamic acid). Most of these alkaloids have also been found in C. ophiocarpa (3) which indicates a close relationship between C. cheilanthifolia and C. ophiocarpa. This is also in agreement with the botanical categorization of these two species to the subsection Strictae (1).