Advances in Legume Systematics 14. Classification of Caesalpinioideae. Part 2: Higher-level classification.

Caesalpinioideae is the second largest subfamily of legumes (Leguminosae) with ca. 4680 species and 163 genera. It is an ecologically and economically important group formed of mostly woody perennials that range from large canopy emergent trees to functionally herbaceous geoxyles, lianas and shrubs, and which has a global distribution, occurring on every continent except Antarctica.

Re-circumscription of the mimosoid genus including new combinations for all species of the phylogenetically nested (Leguminosae, Caesalpinioideae, mimosoid clade).

Recent phylogenomic analyses of 997 nuclear genes support the long-held view that the genus is congeneric with . is resolved as monophyletic only if the genus is subsumed within it. The two genera were distinguished solely by relatively minor differences in the mode of dehiscence of the fruits (a craspedium separating into one-seeded endocarp segments in versus a craspedium with the whole fruit valve breaking away from the persistent replum in ) and the craspedial fruit type itself provides a shared synapomorphy for the re-circumscribed .