Which plant has the highest number of species in  Hottonia or Spiraea
Spiraea Spiraea , is a genus of about 80 to 100 species of shrubs in the family Rosaceae. They are native to the temperate Northern Hemisphere, with the greatest diversity in eastern Asia.
Paeonia broteri Paeonia broteri is a perennial, herbaceous species of peony. It is an endemic species of Spain and Portugal. It bears rose-pink flowers about 12 cm wide and glossy green leaves. It reaches up to 40 cm in height. Its common name in Portugal is rosa-albardeira, and in Spain albardera and matagallinas (also used for "Daphne gnidium" and "Solanum dulcamara").