Pediocactus simpsonii var. indraianus Hochstätter in Succulenta (Netherlands) 69(9): 178–183. 1990
Pediocactus simpsonii var. indraianus in Succulenta (Netherlands) 69(9): 178–183. 1990
is basionym for Pediocactus simpsonii subsp. indranus, Gen. Pediocactus, Navajoa, Toumeya Revised: 43. 1995
is basionym for Pediocactus nigrispinus subsp. indranus in Cactaceae Rev. 6: 11. 2003