The white rhatany (Krameria bicolor) belongs to the family Krameriaceae (the Krameria family). It is a perennial shrub that is native to the southwestern United States from California to Texas, and in northern Mexico. This shrub grows in plains and slopes in desert regions, and up to a height of 60-90 cm. The stems are densely much-branched and low lying. The leaves are alternate, narrowly lanceolate, less than 1.2 cm long, gray-green to greenish, and finely-haired. The pueple-red flowers bloom from April to May. The most visible component of the flowers are the five purple-red sepals, which are angled backwards when mature. The fruit is mostly globose and spiny.