''Triglochin maritima'' is a species of flowering plant in the arrowgrass family Juncaginaceae. It is found in brackish marshes, freshwater marshes, wet sandy beaches, fens, damp grassland and bogs. It has a circumboreal distribution, occurring throughout the northern Northern Hemisphere. In the British Isles it is common on the coast, but very rare inland.

Description

It is similar to

marsh arrowgrass ''Triglochin palustris'' or marsh arrowgrass is a species of flowering plant in the arrowgrass family Juncaginaceae. It is found in damp grassland usually on calcareous soils, fens and meadows. The species epithet ''palustris'' is Latin for "of ...

(''Triglochin palustris'') but has the following differences: it has

stolons In biology, stolons (from Latin '' stolō'', genitive ''stolōnis'' – "branch"), also known as runners, are horizontal connections between organisms. They may be part of the organism, or of its skeleton; typically, animal stolons are external s ...

, is stouter. The leaves are fleshy and not furrowed above. It is not very aromatic. The

raceme A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the s ...

are more dense and like

sea plantain ''Plantago maritima'', the sea plantain, seaside plantain or goose tongue, is a species of flowering plant in the plantain family Plantaginaceae. It has a subcosmopolitan distribution in temperate and Arctic regions, native to most of Europe, n ...

. The flowers are fleshier.C. Dwight Marsh, A. B. Clawson, and G. C. Roe Jr (1929).
Arrow grass as a Stock-Poisoning Plant
'' United States Department of Agriculture. The fruits are oval, 4 mm long, 2 mm wide. It varies in height from . It flowers in May to August; flowers are greenish, 3 petalled, edged with purple, across, in a long spike. Common names include seaside arrowgrass, common arrowgrass, sea arrowgrass and shore arrowgrass. It can be an annual or perennial. ''Triglochin concinna'' is a synonym of this species. This plant is toxic, as it can produce

cyanide Cyanide is a naturally occurring, rapidly acting, toxic chemical that can exist in many different forms. In chemistry, a cyanide () is a chemical compound that contains a functional group. This group, known as the cyano group, consists of a ...

. This species has been known to cause losses in cattle, with green leaves being more toxic than dried material.

References

Juncaginaceae Plants described in 1753 Taxa named by Carl Linnaeus Brackish water plants Freshwater plants {{monocot-stub