Novice, need to identify a certain plant
I'm very new to this and am having a hard time identifying a certain type of plant. I've looked in a bunch of catalogs for groundcover but can't find it. This plant seems to be used for groundcover here in Southern California. It has very silvery foliage and yellow daisy-like flowers. It is grown on gentle slopes in full sun and in large areas. Short plant and used pretty extensively. Please help!