You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Along G.T. Railway, about Tunnel Station near city of Port Huron. Remove constraint Place: Along G.T. Railway, about Tunnel Station near city of Port Huron. Place Michigan Remove constraint Place: Michigan Place North America Remove constraint Place: North America Place St. Clair Remove constraint Place: St. Clair Topic Caryophyllales Remove constraint Topic: Caryophyllales Topic Polygonaceae Remove constraint Topic: Polygonaceae Topic Polygonum Remove constraint Topic: Polygonum