Thoroughwort.Eupatorium perfoliatum.Boneset.
Found in roadside thickets, and the borders of copses, during July and August.
The simple stalk, commonly about 2 feet high, sometimes grows to the height of 4 feet; it is large, strong-fibred, round, and hairy to the touch. In color pale green.
The leaf is lance-shaped, with a long fine-pointed tip, and united at the base to the opposite leaf, completely encircling the stalk as though strung upon it; the margin is finely notched, the midrib stout, with many veins showing; the upper surface is rough, the underside is hairy. The color is a strong green. The pairs of leaves are set at right angles with each other, and at a considerable space apart.
The flowers are small and feathery; greenish white. They are gathered in small tuft-like heads, and arranged in loose, leafy, terminal clusters, on short, stout, pale stems.
A charming kink in the outline marks the joining of the leaves. The pleasant perfume of the blossoms is proclaimed by the frequent visits of the bees. Sometimes the flower-cluster spreads to an unexpected size; personal measurement has discovered a plant, but 18 inches in height, whose clustered bloom was fully a foot across.