Grindelia stricta or Gumplant
Yellow daisy-like flower with thick, fleshy, succulent and toothed leaves. Described as indestructable, one of few plants that can take high winds, being flooded with sea water, and being stranded when the tide flushes back out. They tolerate marine conditions along the coast of California as far North as British Colombia. They grow and spread quickly, forming flower covered mats generally less that a foot tall. The flower buds hold a sticky resin, hence the name gumplant; this substance is sometimes used as skin ointment.
