Sclerocactus whipplei var. heilii Castetter, P.Pierce & K.H.Schwer. in Cact. Succ. J. (Los Angeles) 48(2): 79–80, f. 3–4. 1976.

Nomenclatural References

• person : Edward Franklin Castetter (1896-1978) Based on occurrence of standard abbreviation 'Castetter' in the authors string.
• person : Karl Henry Schwerin (b.1936) Based on occurrence of standard abbreviation 'K.H.Schwer.' in the authors string.
• person : Prince Pierce (b.1946) Based on occurrence of standard abbreviation 'P.Pierce' in the authors string.
• database : The Plant List version 1.0, record: tro-5103717
• database : The Plant List version 1.1, record: tro-5103717