Which genus of plant had more species identified with it in the past, Carissa or Aruncus?
Aruncus Aruncus is a genus of clump forming herbaceous perennial plants in the family Rosaceae. Botanical opinion of the number of species differs, with from one to four species accepted. They are closely related to the genera "Filipendula" and "Spiraea", and are native to mountainous damp woodland in temperate regions of the Northern Hemisphere. Creamy white plumes of flowers are produced above veined and toothed leaflets.
Catharanthus Catharanthus is a genus of flowering plants in the dogbane family, Apocynaceae. Like genus "Vinca", they are known commonly as periwinkles. There are eight known species. Seven are endemic to Madagascar, though one, "C. roseus", is widely naturalized around the world. The eighth species, "C. pusillus", is native to India and Sri Lanka. The name "Catharanthus" comes from the Greek for "pure flower".