Bulrushes: The genus Bolboschoenus west of the Cascade Mts.
Sedges: The genus Carex west of the Cascade Mts.
Flatsedges: The genus Cyperus west of the Cascade Mts.
Spikerushes: The genus Eleocharis west of the Cascade Mts.
Cottongrasses: The genus Eriophorum west of the Cascade Mts.
Clubrushes: The genus Isolepis west of the Cascade Mts.
Beakrushes and Beaksedges: The genus Rhynchospora west of the Cascade Mts.
Bulrushes and Tules: The genus Schoenoplectus west of the Cascade Mts.
Bulrushes: The genus Scirpus west of the Cascade Mts.
Bulrushes: The genus Trichophorum west of the Cascade Mts.