A revision of Callerya Endl. (including Padbruggea and Whitfordiodendron) (Papilionaceae: Millettieae)

The genera Padbruggea Miq., Whitfordiodendron Elmer, and Millettia sections ‘urybotryae’ and ‘ustromillettia’ were united under Callerya Endl. by Geesink (1984). This article presents the necessary new combinations for Callerya sensu Geesink. An outline of the taxonomic history of the genus is given together with some notes on the taxonomic and phylogenetic position. The genus is separated from the remaining bulk of Millettia on account of its thick paniculate inflorescences and diadelphous stamens. A majority also shares conspicuous bracts and bracteoles and a more or less bilaterally symmetric calyx. A key to the nineteen species recognized and full descriptions of the species are provided in the taxonomic part.