Cephalophyllum curtophyllum stands out in the genus, and also in the group Mesembryanthema, by developing compact to creeping growth forms in direct reaction to changes in water supply during the seasons. The variation of flower colour patterns as re-examined here can be related to geographical factors and shows an agreement with neighbouring populations of different species, giving reason to suggest that the pollinators may play a role in the selection processes, yet no further correlation between flowers and other features can be found. The limitation of the species is confirmed, and the present corrected state of the taxonomy of the species is presented.