Horsetail, or Equisetum arvense, is an herb that has historically been used as a diuretic to make you urinate more frequently. Diuretics affect the kidneys, increasing the amount of water and salt ...

Equisetum arvense L. National Museum of Natural History. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view download files. Click to view IIIF info. This ...

Field Horsetail (Equisetum arvense) is a cosmopolitan fern widespread throughout the Northern Hemisphere, found in moist sites along roadsides and riverbanks as well as in fields, marshes, pastures, ...