Mammillaria pettersonii (Golden ball). USDA: 9. Protect from afternoon sun. Hardy to 28°F. Low to moderate water. Needs good drainage. Deep pink flowers in rings appear in spring to summer. Globular growth to 8" +. Origin: Guanajuato, Mexico

Mammillaria phitauiana

Mammillaria pitcayensis

Mammillaria pringlei

Mammillaria prolifera ssp. prolifera. San Antonio del Sur / Cuba

Mammillaria rhodantha

Mammillaria schumannii (Syn: Bartschella schumannii) Cabo San Lucas, Baja CA Sur

Mammillaria schumannii v. globosa (Syn: Bartschella schumannii v. globosa)

Mammillaria sheldonii. Syn:Mammillaria grahamii sheldonii

Mammillaria sonorensis. 

Mammillaria mixed species including: alamensis, armillata, baxteriana, bocasana, columbiana, gasterantha, asiacantha, magnimamma, and others. Profusely flowering cacti, easy to grow.

Mammillaria spinosissima. 

Mammillaria spinosissima ssp pilcayensis