Cones are smaller than 4 in and have sharp knobs at the end of each scale. Cones are about 3-4 in long and symmetrical. Bark comes off easily in puzzle-like pieces. Needles are in 2's and the tips are sometimes twisted. Cones are about 1-2 in long and are lopsided.
Cones sometimes stay on old, bare branches.
Needles are attached singly to twig. When taken off twig, needles leave what looks like a miniature twig. Needles are sharp and stiff. Needles are flat, not sharp, and are at varying angles to twig. Needles come out of all sides of twig.