County | Township | Location | Institution | Year | Month | Day |
Knox | Rockport | Rockport, ME | Farlow Herbarium (Harvard University) (FH) | 1915 | 6 | 14 |
Knox | Rockport | Jameson's Point, Rockport, ME | Farlow Herbarium (Harvard University) (FH) | 1915 | ||
Hancock | Brooksville | Cape Rosier, in large shallow rock pools, forming extensive loosely floating masses | The New York Botanical Garden (NY) | 1901 | 7 | 10 |