G. Winterringer

Rock‐Ledge Vegetation in Southern Illinois

A. G. Vestal, G. Winterringer, 1956 .

The Disappearance of an Area of Prairie in the Cook County, Illinois, Forest Preserve District

V. Shelford, G. Winterringer, 1959 .

Vascular Plants of Illinois.

G. D. Fuller, J. Steyermark, G. N. Jones, 1956 .

Aquatic Plants of Illinois

G. Winterringer, A. Lopinot, 1977 .

Wild orchids of Illinois

G. Winterringer, 1967 .