External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:205428-1
- Publication
- Botanical Gazette; Paper of Botanical Notes. Crawfordsville, IN, Chicago, IL
- Collation
- 53: 226
- Family as entered in IPNI
- Asteraceae
Original Data
- Remarks
- E. occidentale, var. arizonicum, A. Gray