Phalaris (plant)

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Phalaris aquatica.jpg
Phalaris aquatica
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Phalaris

15-22 species (see text)

Phalaris is a genus of grasses. Various species of Phalaris grow on every continent except Antarctica. They can be found in a broad range of habitats from below sea level to thousands of feet above sea level and from wet marshy areas to dry places. P. arundinacea and P. aquatica are sometimes invasive species in wetlands.


Some Phalaris species contain gramine, which, in sheep and to a lesser extent in cattle, is toxic and can cause brain damage, other organ damage, central nervous system damage, and death.[1][2]

Phalaris arundinacea, Phalaris aquatica, and Phalaris brachystachys are known to contain the alkaloids N,N-DMT, 5-MeO-DMT, and 5-OH-DMT (bufotenin). Some research has been done into the variability of alkaloids in the Phalaris grasses. Strains with high levels of alkaloids are best avoided in locations with grazing cattle and sheep, due to potential toxicity. Such high-alkaloid strains include Phalaris aquatica AQ-1 and the species P. brachystachys. Seasonal and weather patterns also appear to affect alkaloid concentration, as most toxicity occurs in autumn and in times of drought. Regrowth after grazing or mowing also shows a considerable increase in alkaloids.

Phalaris Species Known to Contain Alkaloids
Total Alkaloids (Dried)
Phalaris aquatica
Phalaris arundinacea
Phalaris brachystachys
Aerial parts up to 3%

None of the above alkaloids are said to have been found in P. californica, P. canariensis, P. minor and hybrids of P. arundinacea together with P. aquatica.[3]


Some species are used in dried flower arrangements. Phalaris canariensis is commonly used for birdseed.

Phalaris arundinacea is also being trialled as a potential bioenergy crop in Ireland.[5]


Species include:


  1. ^ Toxicants of Plant Origin - Google Book Search. Retrieved 2008-04-20. 
  2. ^ phalaris pdf - AU Dept. of Agriculture and Food
  3. ^ a b c Lycaeum
  4. ^ a b c Erowid Phalaris FAQ
  5. ^ Reed Canary Grass. Teagasc. 2007.

External links[edit]