Euphrasia collina subsp. tetragona (R.Br.) W.R.Barker
, J. Adelaide Bot. Gard. (1982).- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:125652-3
- Publication
- Journal of the Adelaide Botanic Gardens. Adelaide
- Family as entered in IPNI
- Scrophulariaceae