External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:306771-2
- Publication
- Madrono; Journal of the California Botanical Society
- Collation
- 39: 281 (fig. 1)
- Family as entered in IPNI
- Cactaceae
Type Information
- Collector Team
- B.E.Ralston 200
- Type Herbaria
- holotype SRSC
isotype TEX
isotype ASC - Distribution Of Types
- Brewster County (Texas, South-Central U.S.A., Northern America)