External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:103644-2
- Publication
- Cactaceae, The (Britton & Rose). Descriptions and illustrations of plants of the cactus family
- Collation
- 3: 141, fig. 149
- Family as entered in IPNI
- Cactaceae
Links
- Nomenclatural link
- Echinocactus johnsonii Parry
- Same citation as
- Ferocactus johnsonii Britton & Rose, Cactaceae (Britton & Rose) 3: 141 (1922).
- Same citation as
- Ferocactus johnsonii (Parry ex Engelm.) Britton & Rose