Common horsetail (Equisetum arvense), northern giant horsetail (E. telmateia), E. spp. Also šiikʷšíikʷ and sometimes šáykʷšaykʷ. palúšana siikʷsíikʷna šapániix̣taš ‘they burned the horsetail in order to make it clear up’. [UC swíkswikt; NP /s´yxsyx/.]