Key to Trees of Logan Canyon

Option 1
Are the needles 2" to 3" long and silver-green to silver-blue? It is a white fir (Abies concolor).

White Fir sketch

White fir


Option 2
Are the needles less than 2" long and darker blue-green? It is a subalpine fir (Abies lasiocarpa).

Subalpine Fir sketch

Subalpine Fir