You searched for: 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 North America Remove constraint Place: North America Place St. Clair Remove constraint Place: St. Clair Topic Plantae Remove constraint Topic: Plantae Topic Poaceae Remove constraint Topic: Poaceae