External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:87722-2
- Publication
- Handbuch der Kakteenkultur.
- Collation
- 159
- Family as entered in IPNI
- Cactaceae
Links
- Nomenclatural link
- Echinocactus hamatus Muehlenpf.