Mammillaria

Brandegeei - Gruppe
294. (COULT.) BRANDEGEE
          Synonym: Mammillaria gabbii
295. LINDS.
296. BOED.
          Synonym: Mammillaria dawsonii

Petrophila - Gruppe
297. (BR. & R.) ORC.
298. (GATES) BOED.
299. ROSE
          Synonyme: Mammillaria baxteriana
                               Mammillaria marshalliana
300. BRANDEGEE
          Synonym: Mammillaria gatesii
301. (BR. & R.) ORC.
          Synonym: Mammillaria johnstonii var. sancarlensis
302. (BR. & R.) ORC.
          Synonym: Mammillaria nolascana
303. GLASS & FOSTER