| 摘要 |
This is a variety of Pyrus calleryanaxbetulifolia and has been reproduced asexually from a tree found growing in a cultivated area in Du Page County, Ill. with a growth habit of 20' wide and 25' tall without benefit of cultural pruning and trimming. When propagated by me asexually it produced straight-growing progeny with a strong central leader; a tree crown producing annually an abundance of substantially deep green leaves and flowers followed by small persistent fruit. The bark is gray-brown with reddish underbark with elongated scales broken by shallow longitudinal fissures.
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