3592022 424581 Euphorbia squamosa Willd. F. Masson, Water-colour drawings of Plants from South Africa, Canaries, Azores, West Indies (unpublished): t. 38 (1789) [F. Masson]
 
2178446 424581 Euphorbia squamosa Willd. E.P. Boissier, Icon. Euphorb.: t. 74 (1866) [J.C. Heyland]
 
4032202 424581 Euphorbia squamosa Willd. V.L. Komarov (Komorov), Fl. URSS, vol. 14 : p. 393, t. 20, fig. 5 (1934-1964)