You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Conc. XIII, Lot 19, North Orillia Twp., Severn Bridge, 3 1/2 mi. northwest of Remove constraint Place: Conc. XIII, Lot 19, North Orillia Twp., Severn Bridge, 3 1/2 mi. northwest of Place North America Remove constraint Place: North America Place Ontario Remove constraint Place: Ontario Topic Magnoliopsida Remove constraint Topic: Magnoliopsida Topic Myriophyllum Remove constraint Topic: Myriophyllum Topic Plantae Remove constraint Topic: Plantae Topic Saxifragales Remove constraint Topic: Saxifragales