Sassafras

Sassafras

Arbor Walk #30, TreeKeeper ID #1516

This Missouri native tree is capable of producing clones from its sprawling root system, allowing it to create genetically identical colonies. It has leaves that emit a spicy fragrance when crushed.

Scarlet Oak

Scarlet Oak

Arbor walk #49, TreeKeeper ID #1925

Often used as a shade tree in lawns and along streets because it grows to a large size. It is native to southeastern Missouri.

Shellbark Hickory

Shellbark Hickory

Arbor Walk #114, TreeKeeper ID #4255

The Shellbark Hickory is a member of Juglandaceae (Walnut family) that actually produces larger edible nuts than its sister species, the Pecan.

Shingle Oak

Shingle Oak

Arbor Walk #85, TreeKeeper ID #2263

This atypical oak lacks the normal lobed leaf structure seen in other oak species. Its common name derives from the fact that early settlers in the Midwest often used wood from the tree to shingle their roofs.

Shumard Oak

Shumard Oak

Arbor Walk #103, TreeKeeper ID #5795

Also known as the Swamp Red Oak, this large oak species is native to much of the Southeastern U.S. and the Ohio River Valley. The Shumard Oak is planted in urban areas for its tolerance in water availability and air pollution, as well as its preference for alkaline soils.

Smooth Sumac

Smooth Sumac

Arbor Walk #157, TreeKeeper ID #6419

Smooth Sumac is one of the most widespread of all of the sumac species (genus: Rhus). Similar to certain members of the genus, Smooth Sumac berries have been used by some as a tart flavor akin to lemon that can be used to create tea or lemonade.

Sugarberry

Sugarberry

Arbor Walk #29, Treekeeper ID #1658

This lovely mature tree has shaded the west side of Olin Library for generations of students but sadly came down in a storm in July 2023. The Sugarberry is known for its distinctive corky bark and edible berries.

Sugarberry

Sugarberry

Arbor Walk #154, TreeKeeper ID #1620

This tree was grown from a seedling descended from the previous Missouri state champion Sugarberry that lived in Kirkwood Park.

Swamp Chestnut Oak

Swamp Chestnut Oak

Arbor walk #55, Treekeeper ID #7212

This shade tree is a Missouri native to floodplains. It produces acorns that, unlike most, can be eaten straight from the tree without needing to be boiled.

Swamp White Oak

Swamp White Oak

Arbor Walk #105, Treekeeper ID #6088

Like its Latin name suggests, this native oak is recognizable for its dark green leaf and silvery-white underside. It is a deciduous tree with broad and rounded crown, which is good for shading.

Tulip Poplar

Tulip Poplar

Arbor Walk #13, Treekeeper ID #1888

This native tree’s common name comes from its flower that is shaped like a tulip. In 1991, WashU was given this tree as a seedling. It was grown from seed taken from the original Tulip Trees planted by George Washington in 1785 at his Mount Vernon home.

White Oak

White Oak

Arbor Walk #43, Treekeeper ID #2690

The White Oak is one of the most ubiquitous trees in all of the eastern United States. The White Oak is the state tree of Illinois, Connecticut, and Maryland, and numerous trees along the East Coast have stood in towns or cities since before European occupation.

Willow Oak

Willow Oak

Arbor Walk #22, Treekeeper ID #1513

This large native tree has a simple, small leaf, and a finer texture than most oak trees. It is considered a medium to large oak, can grow over 100 feet tall, and is native to the Southeastern portion of the United States, including Missouri.

Yellowwood

Yellowwood

Arbor Walk #21, Treekeeper ID #1882

This medium sized shade tree has panicles of sweet smelling flowers in early summer and brilliant yellow leaves in the fall.