Sub-category: Dogbane family
An herbaceous perennial about 1.5 to 3 feet tall that branches divergently. Hairs on the underside of the leaves, and no hair on the stems. Milky sap appears on broken stems. Leaf margin is entire and leaf venation is alternate. Its leaves appear as pointed ovals, while its flowers appear terminally on a stalk. The interior of the corolla has 5 thick pink stripes that lead to the nectaries.
Habitats include upland prairies, thin sandy woodlands, thinly wooded rocky bluffs, meadows, forest edges, and abandoned sandy fields. The blooming period occurs during the summer for 1 to 2 months.