Evolutionary relationships in the Podalyrieae and Liparieae (Fabaceae) based on morphological, cytological, and chemical evidence

Taxonomic relationships amongst the genera of the southern African tribes Podalyrieae and Liparieae are discussed. Data gained from morphological, cytological and chemical investigations are analyzed cladistically to determine relationships. The genus Cadia (tribe Sophoreae) is included in the investigation to establish whether it should be transferred to the Podalyrieae. The results clearly indicate that the Podalyrieae and Liparieae are monophyletic and that they should be united, but that Hypocalyptus and Cadia should be excluded. Within the monophyletic group, there are two distinct subclades each supported by three apomorphies. The results also show that there is a strong sister relationship between Amphithalea and Coelidium. In the taxonomic treatment the Liparieae are placed into synonymy under the Podalyrieae and two subtribes are recognized. A key to the genera in the tribe is given, followed by a synopsis of the genera.