These notes follow the plan of the previous parts of this series and the remarks made in the introduction thereto apply also here. The Cynareae are a comparatively small group in tropical Africa and although most are fairly conspicuous plants they tend, as 'thistles', to be shunned by collectors as awkward material; this is especially true of the basal and sterile rosette leaves of many species, which are but poorly known and should be collected by those wishing to add to our store of data on these plants.