East Bay Native Plant Species Find out more about some of the native plant species of Alameda and Contra Costa counties. Search for: Show All Species Big tarweed (Blepharizonia plumosa). Photo by Scott Yarger, CC BY-NC 4.0.Mount Diablo fairy lantern (Calochortus pulchellus). Photo by Elsa de Becker.Antioch Dunes evening primrose (Oenothera deltoides ssp. howellii) at Antioch Dunes National Wildlife Refuge. Photo by James Gorham, CC BY-NC 4.0.Lush spring display at the Skyline Serpentine Prairie: goldfields (Lasthenia californica), purple owl’s clover (Castilleja exserta), and new leaves of soaproot (Chlorogalum pomeridianum). Photo by Lech Naumovich.