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CPD Site NA16, California Floristic Province, U.S.A. and Mexico
| Family/Genus | Number of species | State |
| Apiaceae | ||
| Oreonana | 1 | California |
| Asteraceae | ||
| Achyrachaena | 1 | Oregon, California |
| Adenothamnus | 1 | Baja California |
| Baeriopsis | 1 | Baja California |
| Benitoa | 1 | California |
| Blepharizonia | 1 | California |
| Calycadenia | 12 | Oregon, California, Baja California |
| Corethrogyne | 3 | Oregon, California, Baja California |
| Eastwoodia | 1 | California |
| Holocarpha | 4 | California |
| Holozonia | 1 | California |
| Lembertia | 1 | California |
| Monolopia | 4 | California |
| Orochaenactis | 1 | California |
| Pentachaeta | 6 | California, Baja California |
| Phalacroseris | 1 | California |
| Pseudobahia | 3 | California |
| Tracyina | 1 | California |
| Venegasia | 1 | California, Baja California |
| Whitneya | 1 | California |
| Brassicaceae | ||
| Heterodraba | 1 | Oregon, California, Baja California |
| Cactaceae | ||
| Parvisedum | 4 | California |
| Ericaceae | ||
| Ornithostaphylos | 1 | California, Baja California |
| Sarcodes | 1 | California, Baja California |
| Fabaceae | ||
| Pickeringia | 1 | California, Baja California |
| Hydrophyllaceae | ||
| Draperia | 1 | California |
| Lemmonia | 1 | California, Baja California |
| Lamiaceae | ||
| Acanthomintha | 3 | California, Baja California |
| Pogogyne | 5 | Oregon, California, Baja California |
| Lauraceae | ||
| Umbellularia | 1 | Oregon, California |
| Liliaceae | ||
| Bloomeria | 2 | California, Baja California |
| Chlorogalum | 5 | Oregon, California, Baja California |
| Odontostomum | 1 | California |
| Oleaceae | ||
| Hesperelea | 1 | Baja California |
| Onagraceae | ||
| Heterogaura | 1 | Heterogaura |
| Papaveraceae | ||
| Dendromecon | 2 | California, Baja California |
| Hesperomecon | 1 | Oregon, California, Baja California |
| Romneya | 2 | California, Baja California |
| Stylomecon | 1 | California, Baja California |
| Poaceae | ||
| Neostaphia | 1 | California |
| Orcuttia | 6 | California, Baja California |
| Tuctoria | 2 | California |
| Polygonaceae | ||
| Hollisteria | 1 | California |
| Rosaceae | ||
| Chamaebatia | 2 | California, Baja California |
| Lyonothamnus | 1 | California |
| Saxifragaceae | ||
| Bensoniella | 1 | Oregon, California |
| Carpenteria | 1 | California |
| Jepsonia | 3 | California, Baja California |
| Scrophulariaceae | ||
| Ophiocephalus | 1 | Baja California |
| Taxodiaceae | ||
| Sequoia | 1 | Oregon, California |
| Sequoiadendron | 1 | California |
| Sources: Raven and Axelrod (1978), Howell (1957). | ||