Equisetum arvense L. (Subarctic & Temp. Northern Hemisphere: Afghanistan, Alabama, Alaska, Albania, Alberta, Aleutian Is., Altay, Amur, Arizona, Arkansas, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Corse, Cyprus, Czechoslovakia, Delaware, Denmark, District of Columbia, East European Russia, Finland, France, Føroyar, Georgia, Germany, […]