Euphorbia cumbrae Boiss. Euphorbia cumbrae Boiss., Cent. Euphorb. 1860 sec. Martínez-Gordillo & al. 2002=Chamaesyce cumbrae (Boiss.) Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11): 408. 1916 syn. sec. Martínez-Gordillo & al. 2006