Common cordgrass (Spartina anglica)

Common cordgrass (Spartina anglica)
Images courtesy Sally Hacker
Common cordgrass (Spartina anglica)
Common cordgrass (Spartina anglica)
EDRR Species?: 
No

Description
Perennial aquatic grass. Grows 1 to 4 feet tall. Leaf (blade) flat with margins loosely in-rolled at tip, 1/4 to 1/2 inches wide at base. Blade is at a 40- to 80-degree angle to the stem. Internodes are fleshy. Inflorescence is slightly open, with the branches loosely erect to ascending and loosely overlapping. Rhizomes are long and fleshy. It's similar to Dense-flowered cordgrass, Salt-meadow cordgrass and Smooth cordgrass. A detailed key is recommended for positive identification. Common cordgrass has not yet been positively identified in Oregon.

Impacts
Cordgrasses are coastal grass species that can invade salt marsh and mud flat habitats. One plant can develop into a large, circular cloned patch of many meters in diameter. Many patches on barren mudflats can spread until no open space remains.