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). It is estimated that 13 to 18 species exist, and the exact distinction between species is still unclear. Hybridization between some of the species occurs naturally. Many other hybrids, as well as numerous cultivars, are known.
Calymmanthium Calymmanthium is a genus of primitive tree-like cacti from northern Peru. It is the only genus belonging to the tribe Calymmantheae.