A. Well-sampled multi-species coalescent (MSC) tree of Ochna species within the holstii complex. The support values indicated above branches are local posterior probability (LPP) support values. Values not indicated = 1.0. B. Summary topology for species relationships through MSC analysis. C. Summary topology species relationships through concatenated maximum likelihood (ML) analysis. D–G. Gene-tree conflict and alternative topologies based on the MSC analysis for four nodes of interest. Bar graphs indicate quarter frequencies, with red bars representing the main topology and blue and orange bars representing the proportion of alternative topologies. Dotted lines indicate the threshold for equal possibilities for alternative topologies.