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Allium tricoccum Aiton (ramp), close-up of new leavesApril 17 1973
Lamp, Herbert F.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flowersJuly 19 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flower and budJuly 7 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (western columbine), close-up of flowers and bud on stemJuly 7 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flowerJuly 19 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flower on stem with leavesJuly 7 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flower on stem with leavesJuly 7 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), flowers and stemsJuly 19 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), habitJuly 19 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), flowers and buds on stems with leavesJuly 27 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), habitJuly 27 1977
Coulter, Ronald M.
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Aquilegia formosa Fisch. ex DC. (Western columbine), close-up of flowerJuly 10 1970
Coulter, Ronald M.
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Aquilegia canadensis L. (columbine), close-up of opening flower with stemApril 1979
Jirak, Jana R.
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Aquilegia canadensis L. (columbine), close-up of flowers, flower buds, and stemsApril 1979
Kohout, John
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Aquilegia canadensis L. (columbine), close-up of flower and budMarch 1979
Kohout, John
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Apocynum androsaemifolium L. (spreading dogbane), close-up of flowers with leavesJuly 1973
Lamp, Herbert F.
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Apocynum androsaemifolium L. (spreading dogbane), close-up of flowers with leavesJuly 1973
Lamp, Herbert F.
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Apocynum cannabinum L. (hairy dogbane), close-up of flower with stems and leavesMarch 1979
Kohout, Kitty
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Apocynum androsaemifolium L. (spreading dogbane), close-up of opposite leaves on stemJuly 12 1976
Coulter, Ronald M.
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Apocynum androsaemifolium L. (spreading dogbane), habitJuly 12 1976
Coulter, Ronald M.
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Apocynum androsaemifolium L. (spreading dogbane), close-up of flowers with leavesJuly 12 1976
Coulter, Ronald M.
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Apocynum androsaemifolium L. (spreading dogbane), close-up of flowersApril 1979
Kohout, Kitty
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Apocynum androsaemifolium L. (spreading dogbane), flowers and leaves on stemJune 1971
Kohout, Kitty
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Aplectrum hyemale (Muhl. ex Willd.) Torr. (Adam and Eve), close-up of leaves and emerging flower stalksMarch 1976
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Aplectrum hyemale (Muhl. ex Willd.) Torr. (Adam and Eve), close-up of basal leafMarch 1976
Kohout, John
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Anthriscus caucalis M. Bieb. (burr chervil), close-up of umbel June 1979
Dritz, Ken
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Anthoxanthum odoratum L. (sweet vernal grass), close-up of spikeletsMarch 1979
Kohout, Kitty