Equisetum arvense subsp. boreale (Bong.) Á. Löve in Náttúrufraedingurinn 18: 101. 1948
Equisetum arvense subsp. boreale in Náttúrufraedingurinn 18: 101. 1948
is new combination for Equisetum boreale in Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 174. 1832
Equisetum arvense subsp. boreale in Náttúrufraedingurinn 18: 101. 1948