External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:807249-1
- Publication
- Flora Americae Septentrionalis; or, a Systematic Arrangement and Description of the Plants of North America
- Collation
- 2: 426
- Date of Publication
- Dec 1813
- Family as entered in IPNI
- Scrophulariaceae
Nomenclatural Notes
Status: pro syn. of P. verticillata L.