You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Enniskilllen Township, Bridgeview Conservation Area, Petrolia. Near oil well "Discovery" site exhibit. Remove constraint Place: Enniskilllen Township, Bridgeview Conservation Area, Petrolia. Near oil well "Discovery" site exhibit. Topic Plantae Remove constraint Topic: Plantae