Mammillaria johnstonii Orcutt  
Family: Cactaceae
pincushion cactus
Mammillaria johnstonii image
Sue Carnahan  
Mammillaria johnstonii
Mammillaria johnstonii image
Sue Carnahan  
Mammillaria johnstonii image
Sue Carnahan  
Mammillaria johnstonii image
Sue Carnahan  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069