Question: Which genus has more species, Nandina or Photinia 

Context paragraphs:
Photinia: Photinia ( ) is a genus of about 40–60 species of small trees and large shrubs, but the taxonomy has recently varied greatly, with the genera "Heteromeles", "Stranvaesia" and "Aronia" sometimes included in "Photinia".

Nandina: Nandina domestica ( ) commonly known as nandina, heavenly bamboo or sacred bamboo, is a species of flowering plant in the family Berberidaceae, native to eastern Asia from the Himalayas to Japan.  It is the only member of the monotypic genus Nandina.

Supporting paragraphs: Nandina Photinia
Answer: Photinia