New combinations in Nearctic endemic Euphrasia (Orobanchaceae)


  • Galina Gussarova Tromso University Museum, UiT and Department of Botany, Faculty of Biology, St Petersburg State University and CEES, Faculty of Biosciences, UiO



Evolution of locally unique species has been important in Nearctic Euphrasia. Fifty percent of Euphrasia species in the flora of North America are considered endemic. Revision of taxonomic status of infraspecific units of endemic species was carried out while preparing the treatment for the Flora of North America. Two new combinations and changes in rank are proposed here: Euphrasia oakesii Wettst. var. williamsii (B.L. Rob.) Gussarova, comb. & stat. nov. and Euphrasia farlowii (B.L. Rob.) Gussarova, comb. & stat. nov.


Fernald, M.L. 1933. Recent discoveries in the Newfoundland flora. Rhodora. 35:95–96, 298–307.
Robinson, B.L. 1901. The North American euphrasias. Rhodora 3:270–276.
Sell, P.D. & P.F. Yeo. 1970. A revision of the North American species of Euphrasia L. (Scrophulariaceae). Bot. J. Linn. Soc. 63:189–234.
Yeo, P.F. 1978. A taxonomic revision of Euphrasia in Europe. Bot. J. Linn. Soc. 77:223–334.



How to Cite

Gussarova, G. (2017). New combinations in Nearctic endemic Euphrasia (Orobanchaceae). Journal of the Botanical Research Institute of Texas, 11(2), 289–290.