Citrus Citrus 16 Southern and southeast Asia and Malay Peninsula. All species look alike. Cordia Canalete 250 Tropics. All species look alike. Cornus Dogwood 45 Northern temperate, South America and Africa.
All species look alike.
Corylus Hazel 10 North temperate. All species look alike. Cotinus Fustet 3 Southeast Asia, southern Europe to China. All species look alike. Crataegus Thorn 280 North temperate.