Summer-flowering species of maculate Aloe L. (Asphodelaceae: Alooideae) in the Aloe zebrina-complex from South Africa: reinstatement of four names, and description of A. braamvanwykii Gideon F.Sm. & Figueiredo

ulate Aloe L. (Asphodelaceae: Alooideae), A. braamvanwykii Gideon F.Sm. & Figueiredo is described from near Wolmaransstad in the NorthWest Province of South Africa. The species is related to five other summer-flowering maculate aloes in the A. zebrina-complex: A. ammophila Reynolds, A. komatiensis Reynolds, A. lettyae Reynolds, A. transvaalensis Kuntze (probably its nearest relative) and A. vandermerwei Reynolds, but differs from these five species in several aspects. Aloe ammophila, A. komatiensis, A. transvaalensis and A. vandermerwei have previously been included in the synonymy of A. zebrina Baker, and are here reinstated. Aloe braamvanwykii is adapted to the climatic extremes of the country’s central north-western grasslands where it is subject to very low winter and high summer temperatures.