Color, bright yellow. Leaves, undivided, without petioles, lance-shaped, toothed, opposite. August to October.

This is the finest of the bur marigolds, being really a handsome thing. The ray flowers are present, large, 2 inches or more broad. It is especially striking in the later days of September and to the middle of October, outlasting many of the golden-rods. It grows in rich bloom around pools in pastures and in swampy land often quite in water. 2 to 3 feet high. The achenes are just as troublesome as those of other species, being furnished with 2 long and 2 short awns, rigidly barbed. Widely diffused. (See illustration, p. 233.)

Larger Bur Marigold (Bidens laevis)

Larger Bur Marigold (Bidens laevis)