You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Houghton Remove constraint Place: Houghton Place Michigan Remove constraint Place: Michigan Place North America Remove constraint Place: North America Place Ottawa National Forest; ca 15 air mi SW of L'Anse. Silver Mountain, an igneous dome. Remove constraint Place: Ottawa National Forest; ca 15 air mi SW of L'Anse. Silver Mountain, an igneous dome. Topic Polypodiales Remove constraint Topic: Polypodiales Topic Polystichum Remove constraint Topic: Polystichum