Other common names include fleabane, tall fleabane, broad-leaved fleabane, white horseweed, and Sumatran fleabane. Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. Horseweed infestations have reduced soybean yields by as much as 83%. Horseweed is a preferable material for use in the hand drill-method of making friction fire.