Fig. 1

Observed results, mapped with an overlay of the Jepson bioregions of California. a Richness of the 1083 OTUs. b Weighted endemism of the 1083 OTUs. c Phylogenetic diversity, which shows a very similar pattern to richness. d Phylogenetic endemism, which shows a similar pattern to weighted endemism with some noticeable differences in the eastern desert mountains, northwest, Bay Area, and southwest