The GC-MS analysis of 65 convolvulaceous species from many, predominantly t
ropical provenances, belonging to 22 genera (9 tribes), revealed the occurr
ence of one to five calystegines in 30 species belonging to 15 genera (8 tr
ibes). This indicates the chemotaxonomic significance of these glycosidase
inhibiting polyhydroxy-nortropanes for the Convolvulaceae. (C) 1998 Publish
ed by Elsevier Science Ltd. All rights reserved.