You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Median of I-94, ca. 3.4 km NE of Wadhams Road interchange, ca. 15 km SW of Port Huron. Remove constraint Place: Median of I-94, ca. 3.4 km NE of Wadhams Road interchange, ca. 15 km SW of Port Huron. Place Michigan Remove constraint Place: Michigan Place St. Clair Remove constraint Place: St. Clair Topic Plantae Remove constraint Topic: Plantae Topic Poaceae Remove constraint Topic: Poaceae Topic Poales Remove constraint Topic: Poales