Ulmus americana 'Markham'
Encyclopedia
The American Elm
American Elm
Ulmus americana, generally known as the American Elm or, less commonly, as the White Elm or Water Elm, is a species native to eastern North America, occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas. The American elm is an extremely hardy tree that can...

 Ulmus americana cultivar 'Markham' was cloned from "an outstanding tree", now long dead, growing naturally at Avon
Avon (town), New York
Avon is a town in Livingston County, New York, United States. The town is bordered on the north by the town of Rush, New York in Monroe County. Avon is south of Rochester. The population was 6,443 at the 2000 census. The town is named after the river Avon...

, New York
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

 before 1950 .

Description

The original tree was of great size, and possessed an extremely pendulous branching habit .

Cultivation

It is not known whether 'Markham' remains in cultivation in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

or beyond.
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