You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place On dry slate cliffs, by Mahoney Creek about 1/4 mile from mouth. George Inlet, Revillagigedo Island Remove constraint Place: On dry slate cliffs, by Mahoney Creek about 1/4 mile from mouth. George Inlet, Revillagigedo Island Topic Amblystegiaceae Remove constraint Topic: Amblystegiaceae