| Equisetaceae | |
Equisetum arvense fo. alpestre
| Luerss. | | |
| Equisetaceae | |
Equisetum arvense subsp. alpestre
| (Wahlenb.) Schonswetter & Elven | J. Bot. Res. Inst. Texas 2(1): 433 | 2008 |
| Equisetaceae | |
Equisetum arvense var. alpestre
| Wahlenb. | Fl. Lapp. 296 | 1812 |
| Equisetaceae | |
Equisetum arvense fo. arcticum
| (Rupr.) M. Broun | | ** |
| Equisetaceae | |
Equisetum arvense var. arcticum
| Rupr. | | ** |
| Equisetaceae | |
Equisetum arvense fo. arvense
| | | |
| Equisetaceae | |
Equisetum arvense var. arvense
| | | |
| Equisetaceae | |
Equisetum arvense fo. atratidens
| Lepage | Amer. Midl. Naturalist 46(3): 755 | 1951 [1952] |
| Equisetaceae | |
Equisetum arvense fo. boreale
| (Bong.) Klinge | | ** |
| Equisetaceae | |
Equisetum arvense subsp. boreale
| (Bong.) Á. Löve | | ** |
| Equisetaceae | |
Equisetum arvense var. boreale
| Ledeb. | | |
| Equisetaceae | |
Equisetum arvense var. boreale
| (Bong.) Rupr. | Mém. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 2(4): 174 | 1832 |
| Equisetaceae | |
Equisetum arvense fo. campestre
| (Schultz) Klinge | | ** |
| Equisetaceae | |
Equisetum arvense var. campestre
| F.W. Schultz | 00 | |
| Equisetaceae | ! |
Equisetum arvense var. campestre
| (Schultz) Rupr. | | |
| Equisetaceae | |
Equisetum arvense fo. diffusum
| Clute | Fern Allies N. America 47, 256 | 1905 |
| Equisetaceae | |
Equisetum arvense fo. nemorosum
| Klinge | | |
| Equisetaceae | |
Equisetum arvense fo. pseudo-alpestre
| Vict. | Contr. Lab. Bot. Univ. Montréal 9: 36, fig.5,116 | 1927 |
| Equisetaceae | |
Equisetum arvense fo. pseudo-silvaticum
| Luerss. | | |
| Equisetaceae | |
Equisetum arvense fo. pseudo-varium
| Vict. | Contr. Lab. Bot. Univ. Montréal 9: 37,116 | 1927 |
| Equisetaceae | |
Equisetum arvense fo. ramulosum
| (Rupr.) Klinge ex Scoggan | Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 8: 369 | 1882 |
| Equisetaceae | |
Equisetum arvense subsp. ramulosum
| (Rupr.) W.F. Rapp | Amer. Fern J. 37: 21 | 1947 |
| Equisetaceae | |
Equisetum arvense var. ramulosum
| Rupr. | Beitr. Pflanzenk. Russ. Reiches 3: 19 | 1845 |
| Equisetaceae | |
Equisetum arvense var. riparium
| Fr. | | |
| Equisetaceae | |
Equisetum arvense var. serotinum
| G.L. Mey. | Chloris Han. 666 | 1836 |
| Equisetaceae | |
Equisetum arvense fo. varium
| Klinge ex Fernald | | |
| Equisetaceae | |
Equisetum arvense var. x fluviatile
| | | |