Frailea buenekeri - n/aFrailea buenekeri ssp. densispina - n/aFrailea castanea - n/aFrailea cataphracta - n/aFrailea colombiana - n/aFrailea curvispina - n/aFrailea friedrichii - n/aFrailea fulviseta - n/aFrailea gracillima - n/aFrailea gracillima ssp. horstii - n/aFrailea chiquitana - n/aFrailea mammifera - n/aFrailea mammifera ssp. angelesiae - n/aFrailea perumbilicata - n/aFrailea phaeodisca - n/aFrailea pullispina - n/aFrailea pumila - n/aFrailea pygmaea - n/aFrailea pygmaea ssp. albicolumnaris - n/aFrailea pygmaea ssp. tuyensis - n/a