As classified in WFO snapshot
May 2019
Warning: older classification
subspecies
Euphrasia collina subsp. tetragona
This subspecies name was first published in J. Adelaide Bot. Gard. 5: 189 (1982)
At the time of this classification snapshot, this subspecies name was accepted by WFO (placed as the accepted name of a taxon). Its description and other taxonomic data can be found on World Flora Online, id: wfo-0001034448.