Place
- Bush Bay1
- Cady's Woods, near Ann Arbor1
- Caribou Island, Isle Royale1
- Carp Creek, near Iron Bridge, University of Michigan Biological Station1
- Carp Lake2
- Carpenter Creek, along, ca 12 mi SE of Traverse City1
- Cascade Glen1
- Cecil Bay1
- Cecil Bay, near1
- Charlevoix7
- Chase S. Osborn Preserve of the University of Michigan, Sugar Island6
- Cheboygan22
- Chippewa15
- Clare2
- Colonial Point Hardwoods, Burt Lake1
- Conway Bog1
- Delta2
- Douglas Lake4
- Douglas Lake, near1
- E side of SE corner of Grand Island, Lake Superior1