External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:134630-1
- Publication
- Erythea; a Journal of Botany, West American and General. Berkeley, CA
- Collation
- 5(11): 115
- Date of Publication
- Nov 1897
- Family as entered in IPNI
- Cactaceae
Nomenclatural Notes
Status: pro syn. of M. dioica K.Brandegee