Due to a production error, an out-of-date (uncorrected) pdf of this paper was uploaded onto Springerlink, and used for the print version of Kew Bulletin 67 (4): 759 – 766. Consequently the authority abbreviation for the second author was incorrect. The new species name is published again below with the correct authority. Barleria grootbergensis I. Darbysh. & E. Tripp sp. nov.