External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:276229-2
- Publication
- Bulletin of the Torrey Botanical Club. New York
- Collation
- 65: 565, figs
- Family as entered in IPNI
- Cactaceae
Type Information
- Collector Team
- Howard S.Gentry s.n.
- Type Herbaria
- holotype MICH
- Distribution Of Types
- Mexico (Northern America)