You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Head of Summit Lake above Fort Nelson (near mile 103) Remove constraint Place: Head of Summit Lake above Fort Nelson (near mile 103) Place North America Remove constraint Place: North America Topic Drepanocladus Remove constraint Topic: Drepanocladus Topic Hypnales Remove constraint Topic: Hypnales Topic Plantae Remove constraint Topic: Plantae