Increased human activity in shoreline areas
Disruption of the naturally occurring fluctuating water levels prevents dune habitat from forming, and then plants do not re-establish themselves
Heavy foot a
Michigan- This species occurs in about 60 sites within 9 counties of Michigan, although highest concentrations are in Mackinac, Emmet, Cheboygen, and Presque Isle. (Michigan Natural Features Inventory 1996)
New York- There is at least one site confirmed in Genesee county and there are unconfirmed reports from Orleans county. (Young 2001)
Ontario - Seven sites. (Ostlie 1990)
Thorough study of all aspects of reproductive biology including pollinator identification, self-pollination ability, seed set and dispersal.
Research is needed to determine the species actual origin and its level of genetic variability. (NatureServe Explorer 2001)
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