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External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:37726-1
- Publication
- Ill. Fl. N. U. S. & Canada, ed. 2
- Collation
- iii. 193 (1913)
- Family as entered in IPNI
- Scrophulariaceae
Full Record