A coarse plant with grooved stem and leaves of various shapes and sizes, growing tall (6 feet or less) and erect. The heads of flowers are flat or elongated in their arrangement, and the seeds give rise to many large, soft, fine hairs. This plant springs up in vast numbers over burned districts, filling the air with its white, filmy, cobwebby pappus when the seed is ripe. This is caught everywhere on fences and trees, blocking window-screens and dusting clothing. There is no beauty in the plant, and it has a rank, disagreeable odor.