Question: Which is a genus native to more areas of the world, Ailanthus or Leonotis? 
Sentence (from "Ailanthus"): Ailanthus ( ; derived from "ailanto," an Ambonese word probably meaning "tree of the gods" or "tree of heaven") is a genus of trees belonging to the family Simaroubaceae, in the order Sapindales (formerly Rutales or Geraniales).
Relevant evidence: No