Above: Wild Quinine in UW Arbortetum Native Gardens in Madison, Wisconsin (7/2/21).
Wild Quinine - Parthenium integrifolium (Threatened)
Wild Quinine grows 20" - 40" tall and prefers full sun and dry to moist areas such as prairies, meadows, woodland edges and hillsides.
Flower heads contain 15 or more whitish disc florets about 1/4" wide that have few rays (5-6) and a prominent disk.
Blooms June to September.
Other names: American feverfew, Eastern feverfew, Eastern parthenium.
Above: Wild Quinine leaves are alternate, large, toothed and stalkless to clasping.
For more information on the Wild Quinine, visit Wikipedia.
Or, visit the UW-Madison Wisconsin State Herbarium website page about Wild Quinine - Parthenium integrifolium.
Above: Wild Quinine specimen collected north of Blanchardville on August 25, 1981.
Above: Wild Quinine botanical drawing.