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Triglochium palustris BotGartBln310505.JPG
Triglochin palustris
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Alismatales
Family: Juncaginaceae
Genus: Triglochin

See text.

Triglochin is a genus in the family Juncaginaceae containing around 18 species. North America has four (or five) species, two of which can also be found in Europe: Triglochin palustris (marsh arrowgrass) and Triglochin maritima (sea arrowgrass). Australia has many more.

The most widely used common name for the genus is arrowgrass, although these plants are not really grasses. Many of the common names for species make use of the term arrowgrass, although there are exceptions: T. procera, for example, is commonly known as water ribbons.

Arrowgrasses are used as food plants by the larvae of some Lepidoptera species including Grey Chi.

Species include:

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