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 Warrior's plume (Pedicularis densiflora). Photo by Helen Hancock.Shade phacelia (Phacelia nemoralis). Photo by Ken Hickman (CC-BY-NC 4.0).Shredding evening-primrose (Eremothera boothii ssp. decorticans), close-up of flowers and buds. Photo by Bonnie Nickel CC-BY-NC 4.0.Hall’s bush mallow (Malacothamnus hallii), Lime Ridge Open Space, Walnut Creek. Photo by Cathy Chambers.