Effects of the storage conditions on the stability of natural and synthetic cannabis in biological matrices for forensic toxicology analysis: An update from the literature

Horse tail, horsetail or horse's tail may refer to:

• the tail of a horse
• Equisetidae, a subclass of living and extinct plants known as horsetails
  • Equisetales, the single extant order of Equisetidae
    • Equisetaceae, the horsetail family, the only extant family of Equisetales
      • Equisetum, horsetail, the only living genus in Equisetaceae
• Cauda equina ('horse's tail'), a bundle of spinal nerves and spinal nerve rootlets in humans
• a type of waterfall

• Horsetail Falls (disambiguation)
• Hippuris, or mare's tail, a flowering plant
• Ponytail, a human hairstyle
• Tug (banner), a pole with circularly-arranged horse tail hairs, historically flown by Turkic tribes