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.
Hypericum fieriense Hypericum fieriense is a species of flowering plant in the family Hypericaceae. It is endemic to Socotra, an island archipelago that is part of Yemen. It grows in mountain shrubland dominated by "Cephalocroton", where it can be found with the endemic tree "Dracaena cinnabari". It is rarer than other local shrubby "Hypericum" species. It can be distinguished from them by its pubescent herbage.