Does Aronia or Hermannia have more species?
Aronia Aronia is a genus of deciduous shrubs, the chokeberries, in the family Rosaceae native to eastern North America and most commonly found in wet woods and swamps. The genus is usually considered to contain two or three species, one of which is naturalized in Europe. A fourth form that has long been cultivated under the name "Aronia" is now considered to be an intergeneric hybrid, "Sorbaronia mitschurinii".
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.