The words ``pine'' or ``pine tree,'' when used to designate the source of spirits of turpentine, shall be deemed to mean a living, growing plant of the genus Pinus, family Pinaceae, unless the words ``wood of'' are used in connection therewith. The terms ``oleoresin of the southern pine'' or ``oleoresin from the southern pine'' shall be deemed to mean the gum or oleoresin exuded by such living, growing trees, the source of gum spirits of turpentine.