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Includes about 40 species generally restricted to cooler portions of the Northern Hemisphere (about half the species are native to China); 7 species are native to the U.S. Twigs have distinct sterigma and grooves separating sterigma; bark scaly; generally intolerant; important for lumber and pulp.
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Red Spruce (P. rubens)
White Spruce (P. glauca)
Black Spruce (P. mariana)
Blue Spruce (P. pungens)
Engelmann Spruce (P. engelmannii)
Sitka Spruce (P. sitchensis)
Norway Spruce (P. abies)
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