Common Trees:
* Sassafras: Known for its unique tri-lobed leaves and spicy bark.
* Sycamore: A large deciduous tree with distinctive mottled bark.
* Sugar Maple: Famous for its sweet sap, used to make maple syrup.
* Sweetgum: Produces spiky seed pods and leaves that turn vibrant colors in fall.
* Spruce: Evergreen coniferous trees with needle-like leaves.
* Silver Maple: A fast-growing maple with silvery undersides to its leaves.
* Scotch Pine: A popular evergreen with long, dark green needles.
* Southern Magnolia: A beautiful tree with large, fragrant flowers.
Less Common Trees:
* Sequoia: Giant evergreen trees, some of the tallest living organisms on Earth.
* Snakebark Maple: A striking tree with bark that resembles snakeskin.
* St. Augustine: A beautiful flowering tree with clusters of white blossoms.
* Strawberry Tree: A small evergreen tree with red, berry-like fruits.
Important Note: There are many more trees that start with "S," depending on your location and the specific types of trees you are interested in. This list just provides a good starting point.