Water Horsetail (Swamp Horsetail)
- Synonyms: Equisetum limosum
- Family: horsetail (Equisetaceae)
- Habitat: marshes, ditches, ponds, and slow-moving streams
- Height: 15 to 45 inches
- Location of spores: in cones at the top of the green stems
- Persistence: deciduous
- Origin: native
Water horsetail stems may be unbranched (as in this photo) or branched. Photographed in Newfoundland, Canada in mid-July.
Cones of water horsetail.