Like all pears, cherries, apples, and hawthorns, the Ussurian Pear is a member of the Rosaceae or rose family.
The tree, also known as the Harbin pear or Chinese pear, is native to China, Japan, Korea, and the Ussuri river area, which forms a border between Russia and Manchuria. It is the most cold-hardy of the thirty or so pear species and will grow in USDA zone 3.
The seeds for the tree were brought to the United States in 1926 by a professor from South Dakota who gathered them near Harbin China. This date is disputed by the Morton Arboretum, which states their tree was planted in 1922. The pome of this species is said to be small, hard and not particularly delicious although it might improve in flavor after a frost. The amount of sugar the fruit contains varies widely between varieties.
Some sources suggest it might be used for jellies. Although this website lumps the Harbin pear in with other Asian pears, it says the fruit may also have a tenderizing agent, making it good for marinades. In a chat group, another respondent suggested it might be worth trying to make a perry from the fruit.
In any case, the trees take up to eight years to produce fruit (pomes) and may live up to 300 years. The fruit is eaten by small mammals and birds. In the landscape the trees are used as a windbreak or as a specimen tree. Like most pears, Ussurian pears contain a compound that has antibacterial properties and may also serve as a flea and tick deterrent.
The Ussurian pear (Pyrus ussuriensis) in City park was planted in 1993 and had a trunk diameter of 3.5″. To find this tree: if you start at the intersection of Sheldon Drive and City Park and walk from the South East corner in a straight line south and east from the point of the intersection, you would find the tree between the the two playing fields.