Which genus has more species, Dorstenia or Brassavola?
Dorstenia:  There are 105 species within this genus that are fairly equally distributed between the Afrotropics and Neotropics, second only in number to the "Ficus" genera in Moraceae, but "Dorstenia" is unique when compared to other members of the Moraceae because of their extremely diverse growth habits and life forms. Brassavola: Brassavola is a genus of 21 orchids (family Orchidaceae).
Dorstenia