They can be found growing in small groups along the side of tree roots.

Richard set his little cup down on a tree root with great care.

Somewhere along here must be a way out of these tree roots.

Those that don't get mixed up with old tree roots.

Also competition from tree roots is an important factor to consider.

Competition from tree roots is also an important factor to consider.

Rising to his feet, he fell over a tree root.

She sat up, and slumped back against the tree root.

It was enough to keep me from stumbling over tree roots, but not to see very far ahead.

The next thing I knew, my right arm had booked into a large tree root.