Which plant consists of more species and is native to over 7 different countries, Arachnis or Callistephus?
Callistephus Callistephus is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species Callistephus chinensis. Its common names include China aster and annual aster. It is native to China and Korea. and it is cultivated worldwide as an ornamental plant.
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.