You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Isle Royale, Occasional in clearing at head of McCargo Cove. Remove constraint Place: Isle Royale, Occasional in clearing at head of McCargo Cove. Place Keweenaw Remove constraint Place: Keweenaw Topic Caryophyllales Remove constraint Topic: Caryophyllales Topic Plantae Remove constraint Topic: Plantae Topic Polygonaceae Remove constraint Topic: Polygonaceae Topic Polygonum Remove constraint Topic: Polygonum