East Bay Native Plant Species Alameda and Contra Costa counties are home to many native plant species. We have assembled an incomplete (but growing!) collection of photographs and information about many of these. Search for: Show all species Yellow faced bumble bee collecting pollen from California poppy in my garden (El Cerrito), Spring 2020. Photo by Robin Mitchell.Elegant tarweed (Madia elegans). Photo by Glen Schneider.Blueblossom (Ceanothus thyrsiflorus). Photo © Pete Veilleux, East Bay Wilds.Early sightings of flatface downingia (Downingia pulchella) were recorded in the Newark area by botanist Joseph Burtt Davy in 1895. Photo by Carol W. Witham (CC BY-NC-SA 3.0).