Sclerocactus johnsonii (Engelm.) N.P.Taylor
, Bradleya 5: 94 (1987): (1987).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:944043-1
- Publication
- Bradleya; Yearbook of the British Cactus and Succulent Society. Botley
- Collation
- 5: 94 (1987):
- Date of Publication
- 1987
- Family as entered in IPNI
- Cactaceae