Fig. 4

CamCYC2 RAxML phylogenetic tree. The CamCYC2 tree only includes sequences isolated from Lobelioideae and Campanuloideae, with no CamCYC2 genes found in Cyphioideae. In Lobelioideae there is a clear duplication across the entire clade, which is not shared with Campanuloideae. The species relationship patterns are congruent between the two Lobelioideae subclades. The U clade includes multiple duplicate lineages in both CamCYC2 paralogs. ML bootstrap values provided. Closed circles indicate hypothesized duplication