You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Between Sharpsburg & Keedysville along MD Rt 34, Shepherdstown Pike, at Porterstown Bridge over Anteietam Creek. Remove constraint Place: Between Sharpsburg & Keedysville along MD Rt 34, Shepherdstown Pike, at Porterstown Bridge over Anteietam Creek. Topic Cyperaceae Remove constraint Topic: Cyperaceae