Flourensia cernua is a species of flowering plant in the aster family known by the English common names American tarwort and tarbush and the Spanish common names hojasé, hojasén, and hoja ancha. It is native to the Chihuahuan Desert of North America, where it occurs in the US states of Arizona, New Mexico, and Texas, and the Mexican states of Sonora, Chihuahua, Coahuila, Durango, San Luis Potosí, and Zacatecas. Most of the species in the genus are found in Latin America; this and F. pringlei are the only two species whose ranges extend into the United States.