mare's-tail

mare's-tail (plural mare's-tails or mares'-tails)

1. A long streaky cloud, spreading out like a horse's tail, and believed to indicate rain; a cirrus cloud.
2. Any aquatic plant of the genus Hippuris, having narrow leaves in whorls.
   1. especially, common mare's tail (Hippuris vulgaris)
3. Erigeron canadensis (syn. Conyza canadensis), an annual weed

   Synonyms: horseweed, Canadian fleabane

4. Equisetum, a fern ally

   Synonyms: horsetail, pipeweed

• mackerel sky and mare's-tails make tall ships carry low sails

• mare's-tail on Wikipedia.Wikipedia
• Hippuris vulgaris on Wikispecies.Wikispecies
• Equisetum on Wikispecies.Wikispecies
• Erigeron canadensis on Wikispecies.Wikispecies
• Equisetum on Wikimedia Commons.Wikimedia Commons
• Erigeron canadensis on Wikimedia Commons.Wikimedia Commons

• Armalites, materials