External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:52196-2
- Publication
- Contributions from the United States National Herbarium. Smithsonian Institution
- Collation
- 12: 419
- Family as entered in IPNI
- Cactaceae
Links
- Nomenclatural link
- Cactus royenii L.
- Same citation as
- Cephalocereus royenii (L.) Britton & Rose
- Same citation as
- Cephalocereus royenii Britton & Rose, Contr. U.S. Natl. Herb. xii. 419 (1909).