Lasthenia gracilis

Native
Family:Asteraceae
Flowers: yellow flowersFebruary-June

Very similar to L. californica subsp. californica, and indistinguishable if pappus is not present. Otherwise L. gracilis has 2 to 6 (usually 4) opaque, white, lance-ovate pappus scales.

Photos

(c) Todd Ramsden (CC BY-NC)
(c) Don Rideout (CC BY-NC)
(c) Todd Ramsden (CC BY-NC)
(c) Todd Ramsden (CC BY-NC)
(c) jingning42 (CC BY-NC)