Hibiscus coulteri  Rock Hibiscus
PERENNIAL.  Usually only noticed when blooming.  Large bowl-shaped creamy yellow flowers have a reddish spot at the base of each petal.  Leaves sharply toothed, dark green, shining.  Blooms in March-April and again in July-August after summer rain.  In the Empires, uncommon among boulders and on gravel ridges.
FAMILY:  Malvaceae (Mallow Family)