External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:245196-1
- Publication
- Manual of the Flora of the northern States and Canada
- Collation
- 1028
- Family as entered in IPNI
- Asteraceae
Original Data
- Remarks
- Am. bor
Nomenclatural Notes
Status: nom. illeg. later homonym non Torrey & A.Gray (1842).
Remarks
Britton (preface iv) acknowledged Rydberg's assistance for this 1901 publication.