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Doug Monroe and Kurt Wolbrink performing a Prescribed BurnMarch 1976
Stickney, William S.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), habitatJune 17 1978
Armstrong, Patricia K.
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Cypripedium candidum Muhl. ex Willd. (white lady’s slipper), close-up of flowerMay 27 1971
Armstrong, Patricia K.
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Sporobolus heterolepis (A. Gray) A. Gray (prairie dropseed), leaves September 30 1976
Armstrong, Patricia K.
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Pulsatilla patens (L.) Mill. (Eastern pasqueflower), flowersApril 9 1978
Armstrong, Patricia K.
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Viola pedata L. (bird’s foot violet), flowers, habitMay 12 1973
Armstrong, Patricia K.
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Sporobolus heterolepis (A. Gray) A. Gray (prairie dropseed), habit
August 3 1978
Armstrong, Patricia K.
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Liatris ligulistylis (Rocky Mountain blazing star), flowersAugust 1977
Armstrong, Patricia K.
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Baptisia bracteata var. leucophaea (Nutt.) Kartez & Gandhi (cream wild indigo), habitJune 4 1975
Armstrong, Patricia K.
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), flowersJune 22 1978
Armstrong, Patricia K.
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Desmodium canadense (L.) DC. (Showy Ticktrefoil), flowersJuly 23 1978
Armstrong, Patricia K.
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Eryngium yuccifolium Michx. (rattlesnake master), habit July 7 1970
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), Desmodium canadense (L.) DC. (Showy Ticktrefoil), and Euphorbia maculata L. (spotted spurge), habitatJuly 23 1978
Armstrong, Patricia K.
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Teaching Environmental Awareness Program Participants at the West Chicago Prairie September 26 1977
Armstrong, Patricia K.
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Symphyotrichum novae-angliae (L.) G.L.Nesom (New England aster), flowers hosting a butterflySeptember 1974
Armstrong, Patricia K.
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Symphyotrichum novae-angliae (L.) G.L.Nesom (New England aster), habit, habitatNovember 6 1976
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), habit, habitatAugust 3 1978
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), top of stalk with weevil damageAugust 1978
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), top of stalk with weevil damageAugust 1978
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), weevil workAugust 30 1978
Armstrong, Patricia K.
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Silphium laciniatum L. (compass plant), close-up of flowerJuly 13 1977
Armstrong, Patricia K.