External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:87910-2
- Publication
- Handbuch der Kakteenkultur.
- Collation
- 126
- Family as entered in IPNI
- Cactaceae
Links
- Nomenclatural link
- Echinocereus undulatus Hildm.
- Nomenclatural link
- Echinocereus undulatus Hildm. ex K.Schum., Gesamtbeschr. Kakt. 261 (1898).