Jürgens A., Dötterl S., Meve U., The chemical nature of fetid floral odours in stapeliads (Apocynaceae-Asclepiadoideae-Ceropegieae), New Phytologist, 2006, 172(3):452-468, doi: 10.1111/j.1469-8137.2006.01845.x
A GC-MS analysis of the scents of fifteen species belonging to eleven stapeliad genera. It distinguishes groups dominated by sulphur compounds, p-cresol, aldehydes or hexanoic acid. The authors interpret the chemical profiles in relation to mimicry of different food sources and sites for fly larval development.