Hairy Rose Mallow
A tall, perennial herb that sometimes develops woody stalks. One of the largest wildflowers in Missouri, about 6 inches across. Flowers resemble hibiscus flowers, with 5 petals and many protruding stamens united around the style, with a spreading head; petals white or rose with a central wine-purple spot. Blooms July-October. Leaves alternate, large, somewhat heart-shaped, rarely lobed, toothed, often with dense, fine hairs.
Similar species: Halberd-leaved rose mallow (H. laevis) has leaves shaped like halberds (an ancient type of lance with 1 long point at the tip and 2 shorter, spreading lobes pointing away at a sharp degree angle at the sides). Its petals are more commonly pink and the stems and leaves lack hairs. The two rose mallows have been known to hybridize.