Machaerocereus gummosus (Stenocereus gummosus)

Maihueniopsis bolivianus

Maihueniopsis glomeratus atrospinosus

Maihueniopsis glomeratus longispinus

Malacocarpus arechavaletei

Malacocarpus erinacea

Malacocarpus ernestii

Malacocarpus langsdorfii

Malacocarpus leucocarpa

 Malacocarpus pauciareolata

Malacocarpus pulvinata

Malacocarpus sesseliflora

Malacocarpus species mix

Malacocarpus tephracantha

Mammillaria alamensis. (Sheldon's Pincushion). Light shade. Hardy to 28°F. Regular water during growing season, keep dry during winter. Clumping, each head 1.2" wide, 4" tall. Large pink flowes. Origin: Mexico.

Mammillaria albata

Mammillaria albiarmata

Mammillaria albicans

Mammillaria amoena

Mammillaria angelensis. USDA: 9b-12. Light shade. Hardy to 28°F. Regular water during growing season, keep dry during winter. Clumping, each head 1.2" wide, 4" tall. Red to dark pink flowers. Origin: Baja California, Mexico.

Mammillaria anniae

Mammillaria apozolensis v. saltensis

Mammillaria applanata

Mammillaria arida

Mammillaria armillata. USDA: 10-12. Full sun to light shade. Hardy to 28°F. Regular water during growing season, keep dry during winter. Clumping, 12" tall. White or pink flowers. Collected above Cabo San Lucas/Baja California Sur.

Mammillaria arroyensis

Mammillaria aureispina

Mammillaria aurihamata

Mammillaria backebergiana

Mammillaria bambusiphila v. parva