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Asclepias sullivantii Engelm. ex Gray (Sullivant's milkweed), close-up of flowersJuly 1965
Purrington, Frank L.
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Ray Schulenberg speaking to group of women in the prairie1964 – 1965
Purrington, Frank L.
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Aesculus parviflora Walt. (bottlebrush buckeye), habitJuly 1966
Purrington, Frank L.
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Amorpha canescens Pursh (leadplant), close-up of flower spikeJuly 1964
Purrington, Frank L.
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Anemone cylindrica Gray (thimbleweed), close-up of flowers with stems and leavesJuly 1965
Purrington, Frank L.
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Anemone patens var. multifida Pritz. (pasqueflower), close-up of flowers in various stages of bloomMay 1955
Purrington, Frank L.