External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:174971-2
- Publication
- Contributions from the United States National Herbarium. Smithsonian Institution
- Collation
- 13: 309
- Family as entered in IPNI
- Cactaceae
Links
- Nomenclatural link
- Opuntia engelmannii var. cyclodes Engelm.
- Same citation as
- Opuntia cyclodes Rose, Contr. U.S. Natl. Herb. xiii. 309 (1911).
- Same citation as
- Opuntia cyclodes (Engelm. & J.M.Bigelow) Rose