Astrophytum myriostigma var. potosinum (H.Moeller) K.Kayser in Borg, Cacti, ed. 1: 251. 1937
Astrophytum myriostigma var. potosinum in Borg, Cacti, ed. 1: 251. 1937
is new combination for Echinocactus myriostigma subsp. potosinus in Z. Sukkulentenk. 3: 54. 1927