Which genus of plant had more species identified with it in the past, Carissa or Aruncus?
Carissa Carissa is a genus of shrubs or small trees native to tropical and subtropical regions of Africa, Australia and Asia. Until recently about 100 species were listed, but most of them have been relegated to the status of synonyms or assigned to other genera, such as "Acokanthera".
Asarina Asarina is a flowering plant genus of only one species, Asarina procumbens, the trailing snapdragon, which is native to southern Europe. Originally placed in the Scrophulariaceae (figwort family), the genus has more recently been moved to the Plantaginaceae (plantain family). Species from North America formerly placed in the genus "Asarina" are now placed in "Holmgrenanthe", "Lophospermum", "Mabrya" and "Maurandya", as well as "Neogaerrhinum". "Asarina" is now regarded as exclusively an Old World genus.