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.
Hemerocallidoideae Hemerocallidoideae is the botanical name of a subfamily of flowering plants, part of the family Asphodelaceae "sensu lato" in the monocot order Asparagales according to the APG system of 2016. Earlier classification systems treated the group as a separate family, the Hemerocallidaceae. The name is derived from the generic name of the type genus, "Hemerocallis". The largest genera in the group are "Dianella" (with 20 species), "Hemerocallis" (15), and "Caesia" (11).