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Rayless goldenrod (Isocoma pluriflora) has been known to be toxic to livestock in the southwestern United States for many years; however, chemical composition of the plant as well as the dosage and duration required to cause toxicosis have not been completely described. Tremetol, the historical
White snakeroot ( Ageratina altissima ) and rayless goldenrod ( Isocoma pluriflora ) can cause "trembles" and "milk sickness" in livestock and humans, respectively. Tremetol, a complex mixture of sterols and derivatives of methyl ketone benzofuran has been extracted from white snakeroot and rayless
White snakeroot and rayless goldenrod cause "trembles" and "milk sickness" in livestock and humans, respectively. The toxin in white snakeroot and rayless goldenrod was identified in 1927 and 1930, respectively, as tremetol. It was reported that the toxin in white snakeroot disappears as it is dried
Rayless goldenrod (Isocoma pluriflora) sporadically poisons horses and other livestock in the southwestern United States. Similar to livestock poisoning by white snakeroot (Ageratina altissima) in the midwestern United States, previous research suggests that benzofuran ketones (BFK: tremetone,