One such species is the butternut tree, which is being attacked by a fungus throughout its range.
I saw a butternut tree as we came in.
There is also a substantial population of butternut trees.
Then she took another pace and took a butternut from a butternut tree.
Minnesota has had a moratorium on the harvest of healthy butternut trees from state-owned land since 1992.
The nuts are prized by animals and cooks, but butternut trees provide valuable wood known as white walnut.
Since 1993, Mr. Birmingham has been surveying the state's butternut trees.
I've pretty much felt this way since I blasted a red squirrel out of a butternut tree from my bathroom window a few years back.
Forest stands seldom contain more than an occasional butternut tree, although in local areas it may be abundant.
In some areas, 90% of the butternut trees have been killed.