Lotononis caerulescens (Fabaceae — Crotalarieae): A new combination for Lebeckia microphylla, with notes on the distinction between Buchenroedera, Lebeckia and Lotononis

The generic position of Lebeckia microphylla E. Mey. has been subject to differing taxonomic interpretations. Previously the species has also been described as Krebsia argentea Eckl. & Zeyh. [Krebsia Eckl. & Zeyh. is now a section of Lotononis (DC.) Eckl. & Zeyh.] and later as Buchenroedera glabriflora N.E. Br. and B. uniflora Dümmer. Based on new evidence, this species is shown to be better placed in Lotononis section Krebsia. The new combination Lotononis caerulescens (E. Mey.) B-E. van Wyk is made