]> GH barcode-01098921 United States of America Maryland Limekiln road ca. 3/4 of a mile south of the Town of Antietam, Antietam Creek and Harper's Ferry Road. Cardamine concatenata (Michaux) O. Schwarz (Michaux) O. Schwarz 2020-11-24 16:21:02 W. D. Longbottom, D. H. Williams & J. D. Saffer