Coryphantha duncanii (Hester) L. D. Benson  
Family: Cactaceae
Duncan's Snowball Cactus
[Escobaria dasyacantha var. duncanii (Hester) N.P.Taylor,  more]
Coryphantha duncanii image
Daniela Roth  
Coryphantha duncanii
Coryphantha duncanii image
Daniela Roth  
Coryphantha duncanii image
Daniela Roth  
Coryphantha duncanii image
Daniela Roth