Patterns of Variation and Chemosystematic Significance of Phenolic Compounds in the Genus (Fabaceae, Podalyrieae).

As a contribution towards a better understanding of phenolic variation in the genus (honeybush tea), a collection of 82 samples from 15 of the 23 known species was analysed using liquid-chromatography-high resolution mass spectrometry (UPLC-HRMS) in electrospray ionization (ESI) negative mode. Mangiferin and isomangiferin were found to be the main compounds detected in most samples, with the exception of and where none of these compounds were detected. These xanthones were found to be absent from the seeds and also illustrated consistent differences between species and provenances.