External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:87236-2
- Species Name
- Echinocactus capricornis A.Dietr.
- Publication
- Handbuch der Kakteenkultur.
- Collation
- 154
- Family as entered in IPNI
- Cactaceae