This checklist of Namibian plant species started as an updated list of previous publications. Over the past few years, however, it evolved to become a list that needs checking, that is, it is not necessarily a list of what occurs in Namibia, but what has been recorded as occurring here! The aim was to find out what 'may' occur here so that a means of identifying such taxa could be found, for example, suitable literature. The sources for the list were herbarium specimens, literature, and communication with botanists all over the world. Obviously, it was not possible to verify taxonomic status or include all herbarium specimens not yet computerised, hence the inclusion of notes to indicate problem areas.