Arbor Walk #17, Treekeeper ID #1937
This is one of the oldest and largest trees on campus. It has large green leaves and small, sweetly scented flowers. Recently, efforts have been taken to preserve and continue on the genetic lineage of this tree whose history follows that of WashU's Danforth Campus.
Arbor Walk #134
The Eastern White Pine (Pinus strobus) is considered to be the tallest tree east of the Rocky Mountains, and one of the most historically important. This tree, which ranges from 80' up to 180+' at its record tallest, was the premier tree for timber in North America in the 18th and 19th century. Due to its massive demand in furniture, construction, and farming, stands of this pine were dramatically wiped out by 1900.
Arbor walk #12, Treekeeper ID #1649
Arbor Walk #120
This tree gets its name from the gummy sap contained in the tree's leaves, branches, and bark, which does not pour out like a milkweed but rather pulls apart with sticky strings like half-dried glue. Native to China, this tree has been traditionally used to treat high blood pressure, liver, and kidney issues.
Arbor Walk #125
The Heritage Oak is a hybrid between the English Oak (Quercus robur) and the Bur Oak (Quercus macrocarpa), two similar white oaks from different continents. These closely related species produce a sturdy, fast-growing oak with the large acorns of the Bur Oak and fall colors of the English Oak.
Arbor Walk #117
This willow is a hybrid between the Bay Willow (Salix pentandra) and the Eastern Crack-willow (Salix euxina). It was developed at North Dakota State University and is known for its rounded shape, vigorous foliage, and its namesake reflective leaves that lend the 'Silver Lake' epithet.
Arbor walk #6, Treekeeper ID #2200
The London Planetree is a hybrid of the Oriental Plane (Platanus orientalis) and American Sycamore (Platanus occidentalis), combining improved disease resistance with cold tolerance. The London Planetree is also extremely tolerant of pollution, and is even found to be an effective removal agent of air pollution particles.
Arbor walk #10, TreeKeeper ID #1794