Pediocactus nigrispinus (Hochstätter) Hochstätter in Succulenta (Netherlands) 71(3): 99. 1992
Pediocactus nigrispinus in Succulenta (Netherlands) 71(3): 99. 1992
is new combination for Pediocactus simpsonii var. nigrispinus in Succulenta (Netherlands) 69(9): 178-179. 1990
Pediocactus nigrispinus in Succulenta (Netherlands) 71(3): 99. 1992