Menyanthes trifoliata L., Sp. Pl. 145 1753. (syn: Menyanthes americana Sweet; Menyanthes latifolia Raf.; Menyanthes palustris Gray; Menyanthes paradoxa Fr.; Menyanthes tridentata Raf.; Menyanthes trifoliata f. brevistyla Aver.; Menyanthes trifoliata var. minor Fernald; Menyanthes trifoliata subsp. verna (Raf.) Gervais & M.Parent; Menyanthes trifolium Neck.; Menyanthes verna Raf.);
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Subarctic & Temp. Northern Hemisphere: Afghanistan, Alaska, Alberta, Aleutian Is., Altay, Amur, Arizona, Austria, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Corse, Czechoslovakia, Denmark, East European Russia, Finland, France, Føroyar, Germany, Great Britain, Greece, Greenland, Hungary, Iceland, Idaho, Indiana, Iowa, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kazakhstan, Khabarovsk, Korea, Krasnoyarsk, Kuril Is., Labrador, Magadan, Maine, Manchuria, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Mongolia, Montana, Morocco, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pennsylvania, Poland, Portugal, Primorye, Prince Edward I., Québec, Rhode I., Romania, Sakhalin, Saskatchewan, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tibet, Transcaucasus, Turkey, Ukraine, Utah, Vermont, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Yakutskiya, Yugoslavia, Yukon as per POWO;
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menyanthes trifoliata: 2 images- one high res.
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References:
POWO Catalogue of Life The Plant List Ver.1.1 IPNI Flora of China FOC illustration Flora of Pakistan FOP illustration Annotated checklist of Flowering plants of Nepal India Biodiversity Portal
https://www.minnesotawildflowers.info/flower/buckbean
https://www.wildflower.org/plants/result.php?id_plant=metr3
https://www.missouribotanicalgarden.org/PlantFinder/e=0&n=1
