''Thinopyrum acutum'', the sea couch, is a species of

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

grass in the family

Poaceae Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivate ...

(true grasses). They have a self-supporting growth form and simple, broad leaves. Individuals can grow to 65 cm tall. The species is invasive to the

Mont-Saint-Michel Bay The Mont-Saint-Michel Bay (, ; ) is located between Brittany (to the south west) and the Normandy peninsula of Cotentin (to the south and east). The bay was listed as a UNESCO world heritage site in 1979 for its aesthetic quality and its importanc ...

and has altered the area's ecology.

Sources

References

acutum Flora of France Flora of Italy Flora of Malta Flora of the United Kingdom Plants described in 2018 {{Pooideae-stub