| Equisetum affine (Engelm.) Rydb. |
Synonym |
 |
TRO |
| Equisetum alaskanum J.P. Anderson |
Unresolved |
 |
TRO |
| Equisetum alsaticum |
Unresolved |
 |
TRO |
| Equisetum arcticum Rupr. |
Unresolved |
 |
TRO |
| Equisetum arvense L. |
Accepted |
 |
TRO |
| Equisetum arvense var. alpestre Wahlenb. |
Synonym |
 |
TRO |
| Equisetum arvense subsp. alpestre (Wahlenb.) Schonswetter & Elven |
Accepted |
 |
TRO |
| Equisetum arvense subsp. boreale Á. Löve |
Synonym |
 |
TRO |
| Equisetum arvense var. x fluviatile |
Synonym |
 |
TRO |
| Equisetum bogotense Kunth |
Accepted |
 |
TRO |
| Equisetum bolivianum Gand. |
Synonym |
 |
TRO |
| Equisetum boreale Bong. |
Accepted |
 |
TRO |
| Equisetum braunii J. Milde |
Synonym |
 |
TRO |
| Equisetum calderi B. Boivin |
Synonym |
 |
TRO |
| Equisetum californicum (Milde) G.N. Jones |
Accepted |
 |
TRO |
| Equisetum capense Burm.f. |
Synonym |
 |
WCSP (in review) |
| Equisetum capillare Hoffm. |
Synonym |
 |
TRO |
| Equisetum debile Roxb. ex Vaucher |
Synonym |
 |
TRO |
| Equisetum diffusum D. Don |
Accepted |
 |
TRO |
| Equisetum diffusum var. paucidentatum C.N. Page |
Synonym |
 |
TRO |
| Equisetum elongatum Willd. |
Unresolved |
 |
TRO |
| Equisetum elongatum var. annuliferum Milde |
Synonym |
 |
TRO |
| Equisetum × ferrissii Clute |
Unresolved |
 |
TRO |
| Equisetum fluviatile L. |
Accepted |
 |
TRO |
| Equisetum fluviatile f. linnaenum (Döll) M. Broun |
Accepted |
 |
TRO |
| Equisetum fontinale Copel. |
Unresolved |
 |
TRO |
| Equisetum funstonii A.A. Eaton |
Synonym |
 |
TRO |
| Equisetum giganteum L. |
Accepted |
 |
TRO |
| Equisetum × haukeanum Mickel & A.R. Sm. |
Accepted |
 |
TRO |
| Equisetum heleocharis Ehrh. |
Synonym |
 |
TRO |
| Equisetum hyemale L. |
Accepted |
 |
TRO |
| Equisetum hyemale subsp. affine (Engelm.) Calder & Roy L. Taylor |
Synonym |
 |
TRO |
| Equisetum hyemale var. affine (Engelm.) A.A. Eaton |
Accepted |
 |
TRO |
| Equisetum hyemale var. californicum Milde |
Synonym |
 |
TRO |
| Equisetum hyemale var. elatum (Engelm.) C.V. Morton |
Accepted |
 |
TRO |
| Equisetum hyemale var. mackaii Newman |
Synonym |
 |
TRO |
| Equisetum hyemale subsp. moorei Syme & N.E. Br. |
Synonym |
 |
TRO |
| Equisetum hyemale var. moorei Hook. & Arn. |
Synonym |
 |
TRO |
| Equisetum hyemale var. robustum (A. Braun ex Engelm.) A.A. Eaton |
Synonym |
 |
TRO |
| Equisetum hyemale subsp. trachyodon A. Braun |
Synonym |
 |
TRO |
| Equisetum hyemale subsp. variegatum A. Braun |
Synonym |
 |
TRO |
| Equisetum intermedium Rydb. |
Unresolved |
 |
TRO |
| Equisetum kansanum J. H. Schaffner |
Synonym |
 |
TRO |
| Equisetum komarovii Iljin |
Unresolved |
 |
TRO |
| Equisetum laevigatum A. Braun |
Accepted |
 |
TRO |
| Equisetum laevigatum var. elatum Engelm. |
Synonym |
 |
TRO |
| Equisetum laevigatum var. scabrellum Engelm. |
Synonym |
 |
TRO |
| Equisetum laevigatum f. scabrellum (Engelm.) M. Broun |
Accepted |
 |
TRO |
| Equisetum laevigatum var. x variegatum |
Synonym |
 |
TRO |
| Equisetum limosum L. |
Synonym |
 |
TRO |
| Equisetum limosum f. linnaeanum Döll |
Synonym |
 |
TRO |
| Equisetum × litorale Kühlew. ex Rupr. |
Accepted |
 |
TRO |
| Equisetum lyi H. Lév. |
Unresolved |
 |
TRO |
| Equisetum × mackaii (Newman) Brichan |
Accepted |
 |
TRO |
| Equisetum majus Garsault |
Synonym |
 |
TRO |
| Equisetum martii Milde |
Synonym |
 |
TRO |
| Equisetum maximum Lam. |
Unresolved |
 |
TRO |
| Equisetum mekongense C.N. Page |
Synonym |
 |
TRO |
| Equisetum mexicanum Milde |
Synonym |
 |
TRO |
| Equisetum × mildeanum Rothm. |
Unresolved |
 |
TRO |
| Equisetum montanum Raf. |
Unresolved |
 |
TRO |
| Equisetum × moorei Newman |
Accepted |
 |
TRO |
| Equisetum myriochaetum Schltdl. & Cham. |
Accepted |
 |
TRO |
| Equisetum × nelsonii (A.A. Eaton) J.H. Schaffn. |
Accepted |
 |
TRO |
| Equisetum palustre L. |
Accepted |
 |
TRO |
| Equisetum palustre var. americanum Vict. |
Synonym |
 |
TRO |
| Equisetum palustre var. szechuanense C.N. Page |
Synonym |
 |
TRO |
| Equisetum pratense Ehrh. |
Accepted |
 |
TRO |
| Equisetum prealtum Raf. |
Synonym |
 |
TRO |
| Equisetum prealtum var. affine (Engelm.) M. Broun |
Synonym |
 |
TRO |
| Equisetum pyramidale Goldm. |
Synonym |
 |
TRO |
| Equisetum ramosissimum Desf. |
Synonym |
 |
TRO |
| Equisetum ramosissimum Kunth |
Synonym |
 |
TRO |
| Equisetum ramosissimum var. annuliferum (Milde) Milde |
Synonym |
 |
TRO |
| Equisetum ramosissimum subsp. debile (Roxb. ex Vaucher) Hauke |
Unresolved |
 |
TRO |
| Equisetum ramosissimum subsp. moorei Maire |
Synonym |
 |
TRO |
| Equisetum ramosissimum subsp. ramosissimum |
Unresolved |
 |
TRO |
| Equisetum ramosissimum var. taikankoense Yamam. |
Synonym |
 |
TRO |
| Equisetum ramosum DC. |
Unresolved |
 |
TRO |
| Equisetum ripense Nakai & F. Maek. |
Unresolved |
 |
TRO |
| Equisetum robustum A. Braun ex Engelm. |
Synonym |
 |
TRO |
| Equisetum robustum var. affine Engelm. |
Synonym |
 |
TRO |
| Equisetum saxicola Suksd. |
Synonym |
 |
TRO |
| Equisetum × schaffneri Milde |
Accepted |
 |
TRO |
| Equisetum schaffneri Milde |
Synonym |
 |
TRO |
| Equisetum scirpoides Michx. |
Accepted |
 |
TRO |
| Equisetum sieboldi Milde |
Unresolved |
 |
TRO |
| Equisetum simosum |
Unresolved |
 |
TRO |
| Equisetum sylvaticum L. |
Accepted |
 |
TRO |
| Equisetum sylvaticum f. multiramosum Fernald |
Synonym |
 |
TRO |
| Equisetum sylvaticum var. multiramosum (Fernald) Wherry |
Synonym |
 |
TRO |
| Equisetum telmateia Ehrh. |
Accepted |
 |
TRO |
| Equisetum telmateia var. braunii (J. Milde) Milde |
Synonym |
 |
TRO |
| Equisetum telmateia subsp. braunii (J. Milde) Hauke |
Accepted |
 |
TRO |
| Equisetum × torgesianum Rothm. |
Unresolved |
 |
TRO |
| Equisetum trachyodon (A. Braun) W.D.J. Koch |
Accepted |
 |
TRO |
| Equisetum × trachyodon (A. Braun) Koch |
Synonym |
 |
TRO |
| Equisetum umbrosum J.G.F. Mey. ex Willd. |
Synonym |
 |
TRO |
| Equisetum variegatum Schleich. ex F. Weber & D. Mohr |
Accepted |
 |
TRO |
| Equisetum variegatum var. alaskanum A.A. Eaton |
Synonym |
 |
TRO |
| Equisetum variegatum subsp. alaskanum (A.A. Eaton) Hultén |
Accepted |
 |
TRO |
| Equisetum variegatum var. nelsonii A.A. Eaton |
Synonym |
 |
TRO |
| Equisetum xylochaetum Mett. |
Synonym |
 |
TRO |