Epithelantha micromeris var. greggii (Engelm.) Borg, Cacti, ed. 1: 212. 1937
Epithelantha micromeris var. greggii, Cacti, ed. 1: 212. 1937
is new combination for Mammillaria micromeris var. greggii in Proc. Amer. Acad. Arts 3: 261. 1856
Epithelantha micromeris var. greggii, Cacti, ed. 1: 212. 1937
Taxon for this name