Pressed closely to the axis upward with angle of divergence 15° or less.
Spindle-shaped, broadest in the middle and tapering to each end
Curved inward or upward.
Dry leaf like structures surrounding the base of a pine needle(s). Sheaths are permanent or deciduous. The soft pines, which are mostly 5-needled, possess decideous leaf sheaths, whereas the hard pines (mostly 2-3 needled) possess permanent sheaths.
The needle-like leaves of pines.
Bent or turned downward or backward.
A circular arrangement of leaves or scales.
Requiring the heat of a fire to release seeds from cones.
Pore, found in the leaf and stem epidermis that is used for gas exchange and may be closed to retain moisture in the plant.
Projection, with or without spine or prickle, on the exposed outer surface of a cone scale as seen when the cone is closed.
Spring shoot developing from the terminal winter bud and prodcuing only one internode with one whorl of branches at the end; the cones are subterminal at the end of the shoot.