Botanical Name: Eupatorium perfoliatum. The genus name, Eupatorium, is derived from the ancient king Mithridates Eupator, who was the first to use a similar plant for medicinal purposes. Perfoliatum is a reference to the manner in which the stem appears to perforate the base of adjoining leaves. Other Common Names: Wood boneset, thoroughwort, sweating plant, thorough-stem, teasel, agueweed, thorough-wax, feverwort, wild Isaac, crosswort, vegetable antimony, Indian sage, tearal, wild sage. Habitat: Boneset is mainly found in the temperate regions of North America, ranging from Florida to Canada. It is found as far west as Texas and is a common weed