Jon P. Rebman, Ph.D., Curator and Chair of Botany, San Diego Natural History Museum. Jon P. Rebman, Ph.D., is Curator/Chair of Botany at the San Diego Natural History Museum (since 1996) and a plant taxonomist who conducts extensive floristic research in Baja California and in San Diego and Imperial counties. He leads field classes and botanical expeditions and directs the San Diego County Plant Atlas project (sdplantatlas.org). Personal scientific collections: 37,000+ plant