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Cook County

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Salix myricoides var. myricoides Muhl.

Virginius Heber Chase
USA, Illinois, Cook
1948-05-17
Crataegus calpodendron (Ehrh.) Medik.

Ellsworth Jerome Hill
U. S. A., Illinois, Cook
11-Jun-1904
Rubus pensilvanicus Poir.

Agnes Chase
U. S. A., Illinois, Cook
23-Jul-1900
Crataegus pedicellata Sarg.

Ellsworth Jerome Hill
U. S. A., Illinois, Cook
14-May-1900
Rubus allegheniensis Porter

Ellsworth Jerome Hill
U. S. A., Illinois, Cook
16-Aug-1900
Zizia aurea (L.) W.D.J. Koch

Ellsworth Jerome Hill
U. S. A., Illinois, Cook