The natural resources of the Nipomo Dunes and Wetlands, California Department of Fish and Game, 1976
http://aquaticcommons.org/551/
http://aquaticcommons.org/551/1/natural_resources_of_the_nipomo_dunes.pdf
I stumbled on this. A good report with lists and maps in appendices. Please read if you are interested in the conservation of the Coastal Dunes and Wetlands or just interested.
I will try to add species mentioned in the report below, although there are many.
