Triosteum perfoliatum, commonly known as perfoliate tinker's-weed, late horse gentian, common horse gentian, perfoliate-leaved horse-gentian, feverwort, and wild coffee, is a species of flowering plant belonging to the family Caprifoliaceae (honeysuckle). It is found in eastern and central North America. The yellow-orange berries can be dried, roasted, ground, and used as a coffee substitute.

...