Spartina ×townsendii H.& J. Groves (pro sp.)
Annotated by Jeff M. Saarela, 2011. Remarks: Ligule 1-1.2 millimeters.

Washington: Snohomish County: Near Stanwood.
48.24139° N, 122.36944° W,
Datum: WGS 84. Uncertainty: 5000 meters. Coordinate Source: GeoLocate.
In mudflats; Introduced--in1961 or 62 by WSU--from England by USDA, now established and spreading. Specimen cited in: Saarela JM (2012) Taxonomic synopsis of invasive and native Spartina (Poaceae: Chloridoideae) in the Pacific Northwest (British Columbia, Washington and Oregon), including the first report of Spartina x townsendii for British Columbia, Canada. Phytokeys 10: 25-82. doi: 10.3897/phytokeys.10.2734. Pollen sterile - stained with lactophenol cotton blue. -Jeffery M. Saarela, 2011, National Herbarium of Canada (CAN) - Canadian Museum of Nature. [Saarela georeferences site at 48° 14' N, 122° 21' W]. Leaf material removed for DNA analysis by Tess Clapp at WTU, 7 August 2013. Reference specimen for illustration in Revision of Flora of the Pacific Northwest WTU Herbarium, 2016.

H. M. Austenson s.n., Oct 26, 1965
WTU, Accession: 229915, Barcode: WTU-V-030262