Notocactus arechavaletae v. aureus.

Notocactus bommeljei. USDA: 9b-11. Full sun. Hardy to 32° F. Full sun. Regular water in summer,  keep dry in winter. Yellow flowers. Origin: Brazil.

Notocactus carambeiensis.

Notocactus concinnus

Notocactus elegans

Notocactus grossei. (Syn: ERIOCACTUS grossei) USDA: 9b-11. Light shade. Hardy to 32° F. Full sun. Regular water in summer, keep dry in winter. Solitary or clumping, globular to columnar growth to 12" diameter. Yellow flowers. Origin: Paraguay.

Notocactus gutierrezii.

Notocactus herteri

Notocactus horstii.

Notocactus horstii v. muglianus

Notocactus horstii v. purpureus.

Notocactus incomptus

Notocactus laetivirens