Mojave Desert Wildflowers - April 2008. Flower appears to be Coreopsis bigelovii. Common names: Bigelow Coreopsis [Hrusa 2001], Bigelow's coreopsis [Hrusa 2001], Bigelow's tickseed [PLANTS 2001]. Communities: Creosote Bush Scrub, Joshua Tree Woodland, Pinyon-Juniper Woodland, Foothill Woodland. Habitat: slopes [Walker and/or CNPS Inventory 1994]. Elevation: between 1000 and 5000 feet [Calflora 2004 (ft.)]. Coreopsis bigelovii, a dicot in the family Asteraceae, is an annual herb that is native to California [Hrusa] and is endemic (limited) to California alone [Lum/Walker].