Resinous, mostly evergreen trees, sometimes shrubs, with needlelike lvs., spirally arranged, solitary or fascicled. Stamens and ovules in different cones on the same tree. Staminate cones with many spirally arranged stamens, each having 2 pollen-sacs beneath, the cones drying and soon dropping after anthesis. Ovulate cones with spirally arranged scales, each of which is subtended by a bract, the cones maturing in 1 or 2 or 3 years and becoming +/- woody; ovules naked, 2 at the base of each scale on its upper side, developing into seeds usually bearing a terminal wing made of tissue from the surface parts of the ovuliferous scale. About 9 genera and 200 species. (Munz, Flora So. Calif. 37).