External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:30131632-2
- Publication
- New Flora and Botany of North America
- Collation
- 2: 64
- Date of Publication
- dt. 1836; publ. Jun-Jul 1837
- Family as entered in IPNI
- Scrophulariaceae