Abstract
The sterols and triterpenoids of 12 species of the genus Ononis were analysed by GLC. α-Onocerin was found in all but one of these species, although in some others its concentration was low. In all species examined, sitosterol was the major sterol; stigmasterol, campesterol, cholesterol and the triterpenoids cycloartenol and 24-methylene cycloartanol also occurred. The patterns of α-onocerin and sterols found seem to be consistent with the accepted classification of species within the genus.
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