1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
2 specimens
Potamogeton alpinus
BISH 150146 · Seymour, F.C., 1963
Caledonia County - Newark Pond, Newark
BISH 732780 · Seymour, F.C., 1961
Bristel County - Dighton, along the Segreganset River
