This is the sixthedition of the Checklist of the Vascular Plants of San Diego County (here referred to as simply the “Checklist”), which catalogs all native and naturalized vascular plants known to occur in San Diego County, California, U.S.A. (Note that "naturalized" refers to non-native plants that grow, persist, and reproduce in natural, non-cultivated habitats.)
This edition supersedes the five previous editions of the Checklist (Simpson et al. 1995, 1996; Simpson and Rebman 2001, Rebman and Simpson 2006, Rebman and Simpson 2014). This revision includes nomenclatural changes to the plants of California, species new to science, and updates to the number of native and non-native flora in San Diego County. Learn more about the updates this edition provides by reading this blog.