Fig. 2.

The distribution of crassulacean acid metabolism among vascular plant genera and families. The topology is adapted from Hinchliff and Smith (2014), with an updated topology of some lineages in the core Caryophyllales following Moore et al. (2018); the core Caryophyllales (blue star) are expanded below, with the Cactaceae collapsed because all genera are assumed to be CAM. Only families with CAM genera are labelled, and bars above each tip indicate genera known to have one or more species capable of CAM, regardless of CAM phenotype. Branches are not to scale and have been adjusted for visualization.