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Kris Bachtell collecting Manchurian ash (Fraxinus manshurica) specimens in ChinaDecember 1 2010
The Morton Arboretum
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Staff from The Morton Arboretum measuring street trees for the tree censusAugust 10 2010
The Morton Arboretum
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Dr. Hoban takes notes on observations of shinnery oak (Quercus havardii) in TexasAugust 22 2010