Leaves Needle-Shaped or Scalelike

(2) Leaves in Clusters of Two or More Needles

Five delicate needles per cluster

Needles two per cluster, bluish green
(2) Leaves Not in Clusters
- (3) Leaves Needle-Like or Strap-Shaped
  
  Flattened needles ot two types; light stripes on under-surface
  
  Deep green needles above, pale but not while-striped on under surface; red arils when mature
  
  Bluish-green needles spirally arranged on twig
  
  Green to dark green needles spirally arranged on twig
- (3) Leaves Scale-Like
  
  Flat, yellow-green, scalelike leaves appressed to stem; cones with scales
  
  Flat, scalelike leaves appressed to stem; or, sharp needle shaped leaves in young trees