MeSH definition : A family of dioecious or monoecious evergreen trees belonging to the order Pinales,
subclass Pinidaes, with spirally arranged, narrow or broad leaves often with parallel
veins.;
A family of dioecious or monoecious evergreen trees belonging to the order Pinales,
subclass Pinidaes, with spirally arranged, narrow or broad leaves often with parallel
veins.