Assertion: siberian elm | /r/HasProperty | u. pumila
Facets:
Source sentences:
text: The fast-growing Siberian elm (U. pumila), a brittle-twigged weak-wooded tree, is sometimes planted for quick shade and for windbreaks.
text: In the central United States, native U. rubra hybridizes in the wild with the Siberian elm (U. pumila), which was introduced in the early 20th century and has spread widely since, prompting conservation concerns for the genetic integrity of the former species.
text: The fast-growing Siberian elm (U. pumila), a brittle-twigged weak-wooded tree, is sometimes planted for quick shade and for windbreaks.
text: Seedlings arising from crossings with Siberian elm (U. pumila) at the Lake States Forestry Experimental Station in the 1950s all perished, a classic case of hybrid lethality.
text: Siberian elm (U. pumila) -