Which genus contains more species, Vanda or Sedum?
Vanda: Vanda is a genus in the orchid family (Orchidaceae), which although not massive (about 80 species), is one of the genera more commonly found in the marketplace. Sedum: Sedum is a large genus of flowering plants in the family Crassulaceae, members of which are commonly known as stonecrops. Sedum:  The genus has been described as containing up to 600 species updated to 470.
Sedum