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Hippuris vulgaris
Hippuris vulgaris (Mare's Tail)
Plantaginaceae (Plantain) formerly Hippuridaceae (Mare's Tail Family)

Foothills, montane. Ponds, streams. Summer.
Haviland Lake Trail, July 23, 2005.

Hippuris vulgaris is the only member of its family, but it is found around the world in ponds and streams.  It at first looks like the even more common Horsetails

Flowers are buff green and are found one in each upper leaf axil.  One stamen protrudes in red from the cylindrical female pod.

The pink flower in the photograph at left is that of Persicaria amphibia and the yellow is Utricularia macrorhiza.

Greek gives us both "hippo" ("horse") and "oura" ("tail"). 

Linnaeus named this genus and species in 1753.

Hippuris vulgaris (Mare's Tail)
Plantaginaceae (Plantain)
formerly Hippuridaceae (Mare's Tail Family)

Foothills, montane. Ponds, streams. Summer.
Haviland Lake Trail, July 23, 2005.

Range map © John Kartesz,
Floristic Synthesis of North America

State Color Key

Species present in state and native
Species present in state and exotic
Species not present in state

County Color Key

Species present and not rare
Species present and rare
Species extirpated (historic)
Species extinct
Species noxious
Species exotic and present
Native species, but adventive in state
Eradicated
Questionable presence

Range map for Hippuris vulgaris