You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place St. Clair Remove constraint Place: St. Clair Place in G.T.R. freight yards above Tunnel Station, near City of Port Huron. Remove constraint Place: in G.T.R. freight yards above Tunnel Station, near City of Port Huron. Topic Hypericaceae Remove constraint Topic: Hypericaceae Topic Hypericum Remove constraint Topic: Hypericum Topic Plantae Remove constraint Topic: Plantae