Which genus has more species, Brunfelsia or Alocasia?
Brunfelsia:  There are about 50 species described. Alocasia: Alocasia is a genus of broad-leaved rhizomatous or tuberous perennials from the family Araceae. Alocasia:  There are 79 species native to tropical and subtropical Asia to Eastern Australia, and widely cultivated elsewhere.
Alocasia