External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:77307779-1
- Publication
- Transactions of the American Philosophical Society Held at Philadelphia for Promoting useful Knowledge. Philadelphia
- Collation
- n.s., 7: 360
- Date of Publication
- 2 Apr 1841
- Family as entered in IPNI
- Asteraceae