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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Potamogeton amplifolius
BISH 149860 · Seymour, F.C., 1952
Lincoln Co. - Bradley - Tomahawk River
Potamogeton epihydrus
BISH 150090 · Seymour, F.C., 1970
Washington Country - Greenwood Lake, Woodbury
Potamogeton amplifolius
BISH 150143 · Seymour, F.C., 1963
Essex County - Concord - Miles Pond
Potamogeton berchtoldii
BISH 150144 · Seymour, F.C., 1963
Essex County - Concord - Miles Pond
Potamogeton alpinus
BISH 150146 · Seymour, F.C., 1963
Caledonia County - Newark Pond, Newark
Potamogeton alpinus
BISH 732780 · Seymour, F.C., 1961
Bristel County - Dighton, along the Segreganset River
