External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:292769-2
- Publication
- Memoirs of the New York Botanical Garden. Bronx, NY
- Collation
- 1: 449
- Family as entered in IPNI
- Asteraceae
Links
- Nomenclatural link
- Carduus polyphyllus Rydb.
- Same citation as
- Carduus scopulorum Rydb.