Brook Sunflower. Bidens laevis.

Composite Family. Aug. - Oct.

Plant 1 - 2 feet high, found in swamps, wet places. New England to Minnesota and southward.

Flower-Heads

Yellow, 1 - 2 1/2 inches across, rays 8 - 10. Seed vessels with 2 - 4 prongs.

Leaves

Opposite, toothed, narrow lance-shaped, seated on stem.

Larger Bur Marigold.

Larger Bur-Marigold.