×Harbotrya S.A.Hammerin Cact. Succ. J. (Los Angeles) 68(1): 8. 1996 sec. ???
–×Harbotrya S.A.Hammerin Cact. Succ. J. (Los Angeles) 67: 172. 1995, nom. inval., syn. sec. ???1,2
1.one parent genus not validly published, 2.IPNI 2000+: International Plant Names Index. – The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens – http://www.ipni.org