External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:227940-1
- Publication
- Conspectus Florae Europaeae
- Collation
- Suppl. 2(1): 189
- Family as entered in IPNI
- Asteraceae
Nomenclatural Notes
Bornm. in Bot. Centralbl. xxxvi. (1888)89