All species look alike. All species look alike. Thuja Cedar 5 Eastern North America and eastern Asia. The two North American species can sometimes be separated. Tilia Basswood 45 North temperate regions.
All species look alike.
Tsuga Hemlock 10 Temperate North America and eastern Asia. All species look alike. Turraenthus Avodire 2 Tropical west Africa. All species look alike. Ulmus Elm 18 North temperate regions to northern Mexico.