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Arctium minus (Hill) Bernh. (common burdock), burrs on stemAugust 1972
Kohout, Kitty
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Asclepias hirtella (Pennell) Woodson (tall green milkweed), flowers and flower budsAugust 1972
Kohout, Kitty
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Asclepias syriaca (common milkweed), close-up of flowersJuly 28 1972
Lamp, Herbert F.
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Asclepias syriaca (common milkweed), close-up of individual flowersJuly 28 1972
Lamp, Herbert F.
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Asclepias syriaca (common milkweed), close-up of flowersJuly 28 1972
Lamp, Herbert F.
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Asclepias syriaca (common milkweed), leaves and flowers on stemJuly 28 1972
Lamp, Herbert F.
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Asclepias syriaca (common milkweed), close-up of wilted flowers with young follicle and leavesAugust 1972
Lamp, Herbert F.
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Asclepias verticillata L. (whorled milkweed), close-up of seed podAugust 1972
Lamp, Herbert F.
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Asclepias verticillata L. (whorled milkweed), flowers and buds on stemAugust 1972
Kohout, Kitty
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Asclepias verticillata L. (whorled milkweed), close-up of umbel with flowers August 4 1972
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Asclepias viridiflora Raf. (green milkweed), close-up of umbels with flower buds, stems and leavesJune 22 1972
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Asimina triloba (L.) Dunal (pawpaw), close-up of individual flower parts and flowersNovember 1972
Reynolds, P. J.
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Eurybia macrophylla (L.) Cass. (large-leaved aster), habitAugust 1972
Kohout, Kitty
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Solidago ptarmicoides (Torr. & A. Gray) B. Boivin (upland white aster), habitAugust 1972
Kohout, Kitty
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Doellingeria umbellata (Mill.) Nees (flat-topped aster), flowering habitSeptember 3 1972
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Symphyotrichum lanceolatum (Willd.) G.L. Nesom (panicled aster), flowersSeptember 23 1972
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Baptisia alba var. macrophylla (Larisey) Isley (white wild indigo), flowerJune 2 1972
Lamp, Herbert F.