United States, Minnesota, Benton, BENTON COUNTY ... Graham's Island in the Mississippi River at the State Hwy 15 bridge in Sartell / Sauk Rapids ... T36N R31W NE1/4 of SE1/4 of NW1/4 Sec.22 (small, irregular section) also SE1/4 of NE1/4 of NW1/4 Sec.22. 036N 31W 22
45.598931 -94.181748 +-1092m.
On large sand bar on downstream end of the island. Substrate varies from silt to sand to gravel. Full sun. Associated species include Cyperus squarrosus, C. diandrus, Eleocharis intermedia, E. acicularis, E. ovata, Lipcarpa micrantha, Panicum philadelphicum, Ludwigia palustris, Lindernia dubia, Gnaphalium uliginosum, Polygonum lapathifolium, Mollugo verticillata, Amaranthus tuberculatus, Plantago major.