Beautiful, majestic trees. We see them growing everywhere, from city sidewalks and backyards, to nature centers and parks. They grow in churchyards and schoolyards and outside businesses and stores. Small, medium, or large, trees are usually easy to recognize because of their general size and shape. Trees are vascular plants, so they have the same general structure of roots, stems and leaves that other vascular plants have. You have probably heard of roots, trunks, branches and leaves, but many of us aren’t as familiar with their inner workings.