Tephrocactus

alexanderi
aoracanthus
articulatus v. diadematus
articulatus v. inermis
articulatus v. oligacanthus
articulatus f. syringacanthus
dactyliferus
dimorphus
dimorphus
malyanus
molinensis
molinensis
nigrispinus
papyracanthus
platyacanthus
reicheanus
weberi