Menyanthaceae
Menyanthes trifoliata L. (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,…