There are five recognized groups within the alliance that incorporate the three current genera. These groups do not have any official status yet, although they do represent a coherent way of organizing them. Formal resolution of the taxonomy is likely to accommodate these groupings, although that is not certain. The five groups have, however been assigned informal names, which are convenient for collecting related species. The group names Dircaea and Corytholoma come from old, discarded genus names. Sinningia and Vanhouttea are of course currently accepted genera and seem to be taxonomically valid groupings. Thamnoligeria dates from an early taxonomy of the alliance published in Germany by Fritsch in 1893.