You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Ca. 15 km SW of Port Huron, ca. 3.4 km NE of Wadhams Road interchange, median of I-94. Remove constraint Place: Ca. 15 km SW of Port Huron, ca. 3.4 km NE of Wadhams Road interchange, median of I-94. Place North America Remove constraint Place: North America Place St. Clair Remove constraint Place: St. Clair Place USA Remove constraint Place: USA Topic Asteraceae Remove constraint Topic: Asteraceae