Coryphantha muehlenpfordtii subsp. robustispina (Schott ex Engelm.) Dicht in Kakteen And. Sukk. 47: 252. 1996
Coryphantha muehlenpfordtii subsp. robustispina in Kakteen And. Sukk. 47: 252. 1996
is new combination for Mammillaria robustispina in Proc. Amer. Acad. Arts 3: 265–266. 1856