Senecio arborescens should be a species of the genus Senecio in the Asteraceae family, but the available information about it mostly conflicting and old. According to the World Conservation Union, S. arborescens is a native to and widely occurring in the area ranging from Mexico to possibly Colombia. John Claudius Loudon says that S. arborescens is a synonym for Baccharis halimifolia and native of the United States from "Maryland to Florida, on the sea coast" in his 1842 catalog of trees and shrubs and Raymond Taylor agrees with this in his 1952 catalog of Plants of Colonial Days, which also claims that the plant is native to New Jersey and was introduced to Collinson in England from John Bartram in Cape May in 1683. And a group of botanists under the discipline of Hieronymum Lentzium seem