External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:60464973-2
- Publication
- Proceedings of the American Academy of Arts and Sciences. Boston, MA
- Collation
- 33: 68
- Date of Publication
- 12 Oct 1897
- Family as entered in IPNI
- Asteraceae
Type Information
- Distribution Of Types
- Mexico (Northern America)
- Type Remarks
- Valley of Mexico (Schaffner, no. 84)