Flower:

Clusters of pink flowers surround the stem at the leaf joints in the upper part of the plant. Individual flowers are tubular, about 1/3-inch long with a very hairy upper lip. The lower lip is a darker purplish color, narrow and folds up lengthwise.

Leaves and stem:

Leaves vary in size and shape as they ascend the main stem. The lower leaves are deeply lobed in 3 parts with large teeth and often resemble maple leaves. They can be up to 5 inches long and nearly as wide, on long leaf stems. They are somewhat hairy. They progressively become smaller, the lobes and teeth less deep; at the top of the plant they are usually narrow, unlobed with a few widely spaced teeth. Like all members of the Mint family, attachment is opposite and the main stem is square.

Notes:

Motherwort tends to grow in clusters. I see it growing mostly at the edges of woods.