]> A barcode-01023973 United States of America Massachusetts Concord, S side of town of Concord on W side of Massachusetts route 126; Walden Pond, cove near NW shore of pond Gratiola aurea Muhlenberg Muhlenberg 2023-03-16 11:47:11 D. E. Boufford, B. A. Connolly, C. C. Davis & Y. Hou