Does Aronia or Hermannia have more species?
Hermannia Hermannia is a genus of flowering plants in the mallow family, Malvaceae. It comprises at least 65 species with many more species as yet unresolved.
Elytrigia Elytrigia is a genus of about 20–40 species of grasses, native to temperate regions of the Old World, in Europe, Asia, and northwest Africa. The species are sometimes included in the related genera "Agropyron" or "Elymus", while species in the genera "Pascopyrum" and "Pseudoroegneria" are included in "Elytrigia" by some authors. The genus name has also been spelled Elytrigium.