Authors: Michael G. Simpson

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Families: 57
Genera: 160
Species: 204
Total Taxa (details): 209
Anthemis cotula L. - Mayweed, Stinkweed, Dog-Fennel
Pluchea odorata (L.) Cass. - Salt Marsh Fleabane
Sonchus asper (L.) Hill - Prickly Sow-Thistle
Cryptantha clevelandii Greene - Cleveland's Cryptantha
Lepidium virginicum L. - Virginia Peppercress
Note: The subspecies of Calystegia macrostegia are not recognized in a recent thesis, Namoff, S. M. 2017. Hybridization processes, biogeographic patterns and taxonomic rearrangements within Calystegia (Convolvulaceae). PhD. Claremont Graduate University, Claremont, California, USA.; Simpson, Michael G. 4071 [SDSU]
Cuscuta californica Hook. & Arn. - California/Chaparral Dodder
Juncus acutus L. - spiny rush
Calochortus weedii Alph.Wood - Weed's Mariposa Lily
Eriogonum fasciculatum Benth. - California Buckwheat
Dipterostemon capitatus (Benth.) Rydb. - Blue Dicks, School Bells
Parietaria hespera Hinton - Western Pellitory