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

3 specimens

Pleopeltis polypodioides

BISH 106079

Mertz, H.N.

Huperzia lucidula

BISH 765798

Mertz, H.N., 1879
Bethany

Myriopteris gracilis

BISH 768541

Mertz, H.N., 1817
Dubuque