Ailanthus (; derived from ailanto, an Ambonese word probably meaning "tree of the gods" or "tree of heaven")'s a genus of trees belonging to the family Simaroubaceae, in the order Sapindales (formerly Rutales or Geraniales). The genus's native from east Asia south to northern Australasia. They're fast-growing deciduous trees growing to 25-45 m tall, with spreading branches and large (40-100 cm) pinnate leaves with 15-41 long pointed leaflets, the terminal leaflet normally present, and the basal… (More on Ailanthus)