Epithelantha micromeris subsp. unguispina (Boed.) N.P.Taylor in Cactaceae Consensus Init. 5: 12. 1998
Epithelantha micromeris subsp. unguispina in Cactaceae Consensus Init. 5: 12. 1998
is new combination for Mammillaria micromeris var. unguispina in Monatsschr. Deutsch. Kakteen-Ges. 4: 118. 1932