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.
Trochodendron aralioides Trochodendron aralioides, sometimes colloquially called "wheel tree", is a flowering plant and the sole living species in the genus "Trochodendron", which also includes several extinct species. It was also often considered the sole species in the family Trochodendraceae, though botanists now include the distinct genus "Tetracentron" in the same family. "T.aralioides" is native to Japan, southern Korea and Taiwan.