Euphorbia revoluta Engelm. Euphorbia revoluta Engelm., Rep. U.S. Mex. Bound., Bot. 2(1). 1858 sec. Martínez-Gordillo & al. 2002=Chamaesyce revoluta (Engelm.) Small, Fl. S.E. U.S. 1903 syn. sec. Martínez-Gordillo & al. 2006