The plants can form dense clumps which makes removal expensive and difficult.

The dense clump has stronger gravity and draws other particles toward it.

The leaves grow in a dense basal clump at the ground.

Directly behind the objective was a clump of woods, dense enough that it could not hold a support vehicle.

The flowers are small and white, and occur as dense clumps in the early spring.

After opening it, the worker and his colleagues appeared to have found only a soggy, dense clump of paper.

The plant itself forms dense and large clumps that are up to 1 meter across.

He was sliding right into a dense clump of trees.

The plant produces offsets at the base and in time becomes a dense clump.

To the others he said, "Beyond that dense clump of trees, perhaps three to four hours' journey, is our destination."