Narrow-leaf Boneset - Hyssop Leaf Thoroughwort
Eupatorium hyssopifolium Var. laciniatum
Asteraceae (Composite Sunflower/Daisy) Family

Narrow-leaved Boneset is a tall, upright perennial from a rhizome, from which new growth emerges.  Its preferred habitat is low areas, margine of thickets, right of ways and meadows. Distribution is throughout the Escambia region.

The leaves are narrow and toothed, with smaller leaves in the larger leaf axils; alternate on the stem; lance-like and widest at the middle. The base is wedge-shaped and the tip is elongated.  Smaller leaves are opposite on the stalk with the upper three leaflets being lance-like with rounded tips.

The flowers are in flat-topped clusters of heads at the end of the flowering stem; bisexual in nature and symmetrical in form. Disc flowers and the bracts that subtend the flower head are also white.

Fruit is achene (a seed which outer layer is fused to it).

This group of plants, Eupatorium or Boneset, got its name in pioneer times when herb doctors felt the plant would be useful in herbal remedies. The leaves of E. perfoliatum were wrapped with bandages around broken bones as splints. The dried leaves have also been used to make a tonic, boneset tea, thought to be effective in treating colds, coughs and constipation.

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