Farmers' bulletins. 2106. 16 plants poisonous to livestock in Western States, arrowgrass, bracken fern, chokecherry, copperweed, death camas, greasewood, halogeton, horsebrush, larkspur, locoweed, lupine, milkweed, oak brush, rubberweed, sneezeweed. water hemlock; [prepared by Animal Disease and Parasite Research Division and Crops Research Division, Agricultural Research Service.