You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Keweenaw Remove constraint Place: Keweenaw Place Manganese River gorge, 0.75 mi SE of Copper Harbor Remove constraint Place: Manganese River gorge, 0.75 mi SE of Copper Harbor Topic Bryophyta Remove constraint Topic: Bryophyta Topic Racomitrium Remove constraint Topic: Racomitrium