åkersnelle, Equisetum arvense "Equisetum arvense HORSETAIL" by Gmayfield10 via Flickr, Creative Commons Attribution ShareAlike.	Elvesnelle, Equisetum fluviatile "Water Horsetail" by Me'nthedogs via Flickr, Creative Commons Attribution.
Myrsnelle, Equisetum palustre "Horsetails at Lake Stuart" by Brewbooks via Flickr, Creative Commons Attribution ShareAlike.	Skogsnelle, Equisetum sylvaticum "Wald-Schachtelhalm (Equisetum sylvaticum)" by Blumenbiene via Flickr, Creative Commons Attribution.
Kjempesnelle, Equisetum telmateia "Equisetum telmateia" by Ashley BALSAM baz via Flickr, Creative Commons Attribution.	Gigantsnelle, Equisetum giganteum "Equisetum giganteum" by Ashley BALSAM baz via Flickr, Creative Commons Attribution.

Detaljert systematikk:

U.slekt.Equisetum subg. Equisetum (Legg til)

åkersnelle, Equisetum arvense

Equisetum bogotense (Legg til)
Equisetum diffusum (Legg til)
Elvesnelle, Equisetum fluviatile

Myrsnelle, Equisetum palustre

Engsnelle, Equisetum pratense (Legg til)
Skogsnelle, Equisetum sylvaticum

Kjempesnelle, Equisetum telmateia

U.slekt.Equisetum subg. Hippochaete (Legg til)

Gigantsnelle, Equisetum giganteum

Skavgras, Equisetum hyemale (Legg til)
Equisetum laevigatum (Legg til)
Equisetum myriochaetum (Legg til)
Equisetum ramosissimum (Legg til)
Dvergsnelle, Equisetum scirpoides (Legg til)
Fjellsnelle, Equisetum variegatum (Legg til)

U.slekt.Incertae sedis Equisetum (Legg til)

Equisetum newberryi (Legg til)