Euphorbia grammata (McVaugh) Oudejans Euphorbia grammata (McVaugh) Oudejans, World Cat. Euphorbieae Cumul. Suppl. 1: 11. 1993 sec. Martínez-Gordillo & al. 2002≡Chamaesyce grammata McVaugh, Contr. Univ. Michigan Herb. 19. 1993 syn. sec. Martínez-Gordillo & al. 2006