Which contains more species of flowering plants, Indigofera or Matthiola?
Indigofera: Indigofera is a large genus of over 750 species of flowering plants belonging to the family Fabaceae. Matthiola: Matthiola ( , syn. Matthiola:  This genus contains about 48 to 50 species of annual, biennial and perennial herbaceous plants and subshrubs.
Indigofera