Ageratina altissima, Syn: A. aromatica
Asteraceae (Composite Sunflower) Family
Plant is an upright rhizomatous perennial bearing several stems; tall but usually no more than 24 inches; flat-topped clusters of small fuzzy white flower heads composed entirely of disk flowers. Preferred habitat is woods and margin of thickets, occasionally at roadside. Distribution is throughout the Escambia region.
Leaves are opposite; egg-shaped; three to six inches long; rough; stalked; coarsely or sometimes sharply toothed.
Flowers are heads about 1/4 inch; white to grayish. Flowers occur in the summer.
Fruit is tiny seed-like with white bristles.
The entire plant is poisonous. When eaten by cows this toxic plant may results in milk sickness that can be fatal to humans. The plant is closely related to Hyssop Thoroughwort, Late-flowering Thoroughwort and Aromatic Snakeroot.