This is a suite of plants that are tough competitors in a soggy soil situation.
Carex lacustris (Common Lake Sedge)
Carex trichocarpa (Hairy-fruited Lake Sedge)
Carex stricta (Common Tussock Sedge)
Carex emoryi (Riverbank Sedge / Emory's Sedge)
Carex atherodes (Hairy-leaved Lake Sedge)
Spartina pectinata (Prairie Cordgrass)
Leersia oryzoides (Rice Cut Grass)