You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place T44N, R38W, NE1/4 Section 17. South of Imp Lake. Imp Lake study site, Ottawa National Forest. Remove constraint Place: T44N, R38W, NE1/4 Section 17. South of Imp Lake. Imp Lake study site, Ottawa National Forest.