Epithelantha unguispina (Boed.) D.Donati & Zanov. in Piante Grasse 30: 186. 2010
Epithelantha unguispina in Piante Grasse 30: 186. 2010
is new combination for Mammillaria micromeris var. unguispina in Monatsschr. Deutsch. Kakteen-Ges. 4: 118. 1932