Euphorbia multiseta Benth. Euphorbia multiseta Benth., Pl. Hartw. 1840 sec. Martínez-Gordillo & al. 2002=Eumecanthus multisetus (Benth.) Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11): 414. 1916 syn. sec. Martínez-Gordillo & al. 2006