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Acer saccharinum (silver maple), female flowers, spring
April 1977
Stickney, William S.
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Acer saccharinum (Silver Maple), flower, staminateApril 19 2008
Brown, Deborah J. G.
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Acer saccharinum (Silver Maple), flower, staminateApril 19 2008
Brown, Deborah J. G.
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Acer saccharinum (Silver Maple), flower, staminateApril 19 2008
Hedborn Jr., Edward A.
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Alnus glutinosa (European Black Alder), flower, staminateMarch 23 2009
Hedborn Jr., Edward A.
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Alnus glutinosa (European Black Alder), flower, staminateMarch 23 2009
Hedborn Jr., Edward A.
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Alnus incana subsp. rugosa (Speckled Alder), flower, staminateSeptember 3 2009
Hedborn Jr., Edward A.
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Alnus incana subsp. rugosa (Speckled Alder), flower, staminateApril 13 2011
Hedborn Jr., Edward A.
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Alnus incana subsp. rugosa (Speckled Alder), flower, staminateAugust 1 2007
Hedborn Jr., Edward A.
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Alnus incana subsp. rugosa (Speckled Alder), flower, staminateApril 13 2011
Hedborn Jr., Edward A.
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Alnus maritima (Seaside Alder), flower, staminateSeptember 20 2017
Brown, Deborah J. G.
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Alnus maritima (Seaside Alder), inflorescence, staminateSeptember 20 2017
Brown, Deborah J. G.
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Alnus serrulata (Hazel Alder), inflorescence, staminateApril 12 2017
Brown, Deborah J. G.
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Alnus viridis subsp. crispa (American Green Alder), flower, staminateSeptember 3 2009
Hedborn Jr., Edward A.
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Betula 'Madison' (WHITE SATIN™ Birch), catkin, staminateSeptember 20 2017
Brown, Deborah J. G.
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Betula occidentalis (Water Birch), bud, flower, staminateAugust 2 2016
Hedborn Jr., Edward A.
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Betula papyrifera (Paper Birch), bud, staminate, catkinSeptember 20 2017
Brown, Deborah J. G.
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Betula papyrifera (Paper Birch), flower, staminateSeptember 30 2009
Hedborn Jr., Edward A.