Key to Trees of Logan Canyon

Option 1
Are the needle bases not stalked, the cones erect (at the top of the tree's crown) with scales that fall off when mature, and the buds rounded? These are true firs.

True fir cones sketch


Option 2
Are the needle bases narrowed so the needle appears stalked, the cones hang down and drop off in one piece with a bract that curves out from under each scale (this bract resembles the legs and tail of a mouse that has crawled up under the scale), and the buds are pointed? It is a Douglas-fir (Pseudotsuga menziesii).

Douglas fir cones sketch

Douglas fir cones