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This image shows the distribution of several Diplacus varieties that have red floral coloration. It's important to note that three inland species are not included in this image.

 It seems that the Whole Genome Sequencing (WGS) for Diplacus "Catalina" and D. "Ana" is still not available. Also, the Diplacus stellatus from Baja California on Cedros Island has a missing genome. To gain more insight, one should start sequencing using PacBio HIFI sequencing. The reason is that introns and exons are essential in any transcription factor, and one gains long-string haplotypes. In Santa Cruz E' and San Antonio Mt E', a parallel process, as in E, is observed, namely that D. calycinus or longiflorus is transitioning towards an "Ana" ecotype. We strongly do not believe that any hybridization causes this because their phenotypes have not remained stable for over half a decade.