External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:9712-1
- Publication
- Flora Franciscana: an attempt to classify and describe the vascular plants of middle California. San Francisco
- Collation
- 441
- Date of Publication
- 5 Aug 1897
- Family as entered in IPNI
- Asteraceae