Which type of plant has more species:  Mentha or Calodendrum?
Mentha: Mentha (also known as mint, from Greek "míntha", Linear B "mi-ta") is a genus of plants in the family Lamiaceae (mint family). Mentha:  It is estimated that 13 to 18 species exist, and the exact distinction between species is still unclear. Calodendrum: Calodendrum is a genus of medium-sized evergreen trees comprising two species from Africa. "
Mentha