Are the needles fairly sharp pointed, easy to roll between two fingers (four-sided or diamond-shaped in cross section), and held on the twig on peg-like projections that persist after the needle falls? Clue: the cones are papery. These are spruces.
Are the needles not sharp pointed, not easy to roll between two fingers (flat in cross section), and not held on the twig on peg-like projections?