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Species
Information
- saltmeadow
cordgrass
- Spartina
patens (Ait.)
Muhl.
- USDA
Symbol: SPPA
- Oregon
Noxious Weed Designation: B, T
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES
Identification:
Perennial aquatic grass. Grows 1 to 4 ft tall. Leaves (blades) in-rolled at margins, 1 to 4 mm wide at base. Blade at a 45 degree angle to stem. Internodes are firm. Rhizomes are lacking or long and wiry. Salt-meadow cordgrass is similar to common cordgrass (S. anglica), smooth cordgrass (S. alterniflora), and dense-flowered cordgrass (S. densiflora). A detailed key is recommended for positive identification. Salt-meadow cordgrass is the only Spartina species known to occur in Oregon, and is only in one known location. It is also known to occur in Washington and British Columbia.
Impacts:
This species of cordgrass invades the high marsh in estuaries. It does not invade open lower intertidal mudflats, but dominates plants in this highest tidal zone completely displacing native vegetation and forming montypic stands.
Biological
Controls: Biological control agents are not used on "A" listed weeds in Oregon. This weed is being managed for eradication.
Oregon
Maps of Saltmeadow Cordgrass Distribution
Links:
USDA
Plants Database information on saltmeadow cordgrass
GRIN
Database information on saltmeadow cordgrass
Oregon Department
of Agriculture information on saltmeadow
cordgrass
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