Arboretums are centers of introduction and study woody plants’ ecological biological characteristics, promising species identification for their subsequent in landscape construction. The dendrological park has conducted studies both wild introduced plants, 117 total. analysis urban conditions stability decorativeness species, including as well systematic, biomorphological chorologic analyses we...

ous problem on the East Coast until the 1980s, when it started killing entire populations of both wild and cultivated trees in the mid-Atlantic region. HWA is now well established in the eastern portion of the range of eastern hemlock, from New Hampshire south to North Carolina,z as well as in most of the range of Carolina hemlock (T. caroliniana). While considerable research has been directed ...

and have found that it is complete and satisfactory in all respects, and that any and all revisions required by the final examining committee have been made. Date:__________________________________ In presenting this thesis in partial fulfillment of the requirements for a master's degree at the University of Washington, I agree that the Library shall make its copies freely available for inspect...