marsh arrow-grass

Triglochin palustris is a flowering plant found in wetland habitats across the northern hemisphere. It is commonly associated with calcareous soils and is distributed throughout northern Europe, North America, and parts of Asia and South America. The plant's name reflects its typical occurrence in marshy areas. It is present in the British Isles, especially in northern regions, and is documented in various Canadian provinces and territories. The species was first published in 1753 with the specific epithet spelled as 'palustre' in the original description.