which genus contains more species, Silene or Pimelea?
Silene: Silene is a genus of flowering plants in the family Caryophyllaceae. Silene:  Containing approximately 700 species, it is the largest genus in the family. Silene:  Many "Silene" species are widely distributed, particularly in the northern hemisphere. Pimelea:  There are about 80 species in the genus, which is native to Australia and New Zealand.
Silene