Pines (Pinus)
needles in fasciles of 3, length of 12-25 cm, bark deep furrowed with orange and black contrasting bark
ponderosa pine (Pinus ponderosa)
needles in fascicles of 5 with an acute apex and is clustered at the end of the branch
Limber pine (Pinus flexilis)
2 fasicled needles that are twisted and apressed. Pretty straight tree
Logepole pine(Pinus contorta)
cluster of 15-30 deciduous needles, branches come out horizontal
Western larch (Larix occidentalis)
Distinctly two ranked (you'll see the stem), notched or blunt needle apex, easy to see stomata lines on the bottom
Grand fir (Abies grandis)
3 ranked (more spire like), stomata lines evident on both sides, notched to blunt needle apex. Terminal buds resinous
Subalpine fir (Abies lasiocarpa)
4 sided needles, needles are lighter (white-ish), stomata on all four sides, terminal bud has no cilia hairs
White spruce (Picea glauca)