Old World tropics and warm temperate. All species look alike. Peltogyne Amaranth 23 Tropical America. All species look alike. Persea Red Bay 150 Tropics.
All species look alike.
Picea Spruce 34 Cooler regions of the northern hemisphere. Some separations of species groups are possible. Pinus Pine 93 North temperate regions. 7 Northern hemisphere. All species look alike.