Euphorbia perlignea McVaugh Euphorbia perlignea McVaugh, Brittonia 13(24). 1961 sec. Martínez-Gordillo & al. 2002=Chamaesyce perlignea (McVaugh) G.L. Webster, J. Arnold Arbor. 48(3). 1967 syn. sec. Martínez-Gordillo & al. 2006