Which genus has the most species of trees, Mesquite or Ceanothus
Mesquite: Mesquite is the common name for the genus "Prosopis", containing over 40 species of small leguminous trees. Ceanothus: Ceanothus L. is a genus of about 50–60 species of nitrogen-fixing shrubs or small trees in the family Rhamnaceae.
Ceanothus