Lotus scoparius, gets about 3 feet all around, blooms in Spring.  Surrounding native plants are the white flowered Gnaphalium californicum at right back, red flowered Mimulus aurantiacus right of center back, Eriophyllum confertiflorum in bud at left behind Lotus and at right side; sparsely foliaged Lemonade Berry in back left of center, one Encelia californica flower poking out at right and in middle bottom of photo.  Photo in early April near Salk Institute.