Evolution of phenolic gene families across 30 <i>Oenothera</i> taxa as determined by CAFE analysis of seven enzymes; PAL (phenylalanine ammonia-lyase), 4CL (4-coumaroyl: CoA ligase), C4H (Cinnamate 4-hydroxylase), CHS (Chalcone synthase), F3´H (Flavonoid 3´-hydroxylase), F3H (Flavanone 3-hydroxylase) and FLS (Flavonol synthase).

We show the total number of gene families that are rapidly evolving (rapid evolution; p-value threshold = 0.01), the number of gene families and genes that have experienced expansions contractions. The percentage per each of the seven phenolic enzymes is shown in parentheses.