Fighting Trees
Hostile trees that attack intruders with their branches.
First named in The Emerald City of Oz, ch. 3
Not so tame were the Fighting Trees, which had a forest of their own.
As the books describe them
If any one approached them these curious trees would bend down their branches, twine them around the intruders, and hurl them away. The Emerald City of Oz, ch. 3