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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.

2 specimens

Dryopteris boottii

BISH 149763

Seymour, A.B., 1912
Concord. Middlesex County.

Dryopteris boottii

BISH 150136

Seymour, F.C., 1963
Canada