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Date: 2011-06-22 11:19:42Ornamental trees Elm Quercus palustris Ulmus americana Quercus macrocarpa Dutch elm disease Quercus alba Tree Honey locust Flora of the United States Flora of North America Flora | Restoring the Harvard Yard LandscapeAdd to Reading ListSource URL: arnoldia.arboretum.harvard.eduDownload Document from Source WebsiteFile Size: 637,39 KBShare Document on Facebook |