Galium wrightii

Galium wrightii, common name Wright's bedstraw, is a species of plants in the Rubiaceae. It is native to northwestern Mexico and southwestern United States: Sonora, Chihuahua, Arizona, New Mexico, western Texas, southwestern Utah (Washington Co.), southern Nevada (Clark + Lincoln Cos.) and southeastern California (San Bernardino County)  In California, this plant is ranked as rare, threatened, or endangered in CA; common elsewhere.