Echinocactus myriostigma var. quadricostatus H.Moeller in Z. Sukkulentenk. 3: 54. 1927
Echinocactus myriostigma var. quadricostatus in Z. Sukkulentenk. 3: 54. 1927
is new combination for Echinocactus myriostigma subsp. quadricostatus in Z. Sukkulentenk. 3: 54. 1927