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Platanus occidentalis (sycamore), hanging fruit and flower balls with leaves on twigsMarch 1978
Kohout, Kitty
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Populus deltoides (eastern cottonwood), twig with female catkinsMay 1983
Kohout, Kitty
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Platanus occidentalis (sycamore), diseased twigs and leavesAugust 1973
Stickney, William S.
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Populus deltoides (eastern cottonwood), bare twigs and branchesNovember 1968
Coulter, Ronald M.
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Platanus occidentalis (sycamore), hanging fruit and flower balls with leaves on twigsMay 1971
Kohout, Kitty
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Populus deltoides (eastern cottonwood), bark and bud detailApril 1978
Kohout, Kitty
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Platanus occidentalis (sycamore), single seed head hanging from twig with budsMay 1983
Kohout, Kitty
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Education charts: Twigs, #2
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Platanus occidentalis (sycamore), diseased branch and twigsJanuary 2000
Boland, Tim
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Education charts: Twigs, #1
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Juglans nigra (black walnut), pith
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Education charts: Twigs, #3