Four species, White Spruce (Picea glauca), Engelmann Spruce (Piceaengelmanni), Lodgepole Pine (Pinus contorta), and Alpine Fir (Abieslaciocarpa) comprise the spruce-pine-fir species group.

• 云杉-松-铁杉由四种树种组成：白云杉、英格曼云杉、小干松和阿尔卑斯铁杉组成。