Boechera cobrensis
 Boechera cobrensis (syn. Arabis cobrensis) is a species of flowering plant in the mustard family known by the common names Masonic rockcress and sagebrush rockcress. It is native to the western United States from eastern California to Wyoming where it is found in sandy habitat especially sagebrush. This is a perennial herb growing several erect slender stems to heights near half a meter from a branching caudex.