Monday, January 23, 2017

The Sweetgum - Liquidambar styraciflua

The Sweetgum - Liquidambar styraciflua, is a deciduous tree that reaches heights of up to 132 feet. It is most easily identified by it's palmately lobed, almost star shaped leaves and spiked fruiting balls (which are even called some not so nice names when an unknowing party steps on one). Generally Sweetgums grow in a upright fashion, with a single erect trunk with little branching on the lower 1/2, this is especially true when grown in woodland or forest areas. The Sweetgum is a member of the Altingiaceae family, this family has members in North and Central America, Southeast Asia and Turkey - it includes 2 genera and 13 species, only 1 that is native to the United States. The Sweetgum is also called to as Gum, Gum Ball, Monkey Ball, or Sweet Gum. 

Image Citation: Deena Sharon Chadi, Bank Street College of Education, Bugwood.org

The Sweetgum has grayish or green-gray bark that is finely or moderately fissured. The leaves are alternate and simple, palmate with 5-7 lobes, almost shaped like a star with a more flattened base. The upper portions of the leaves are usually lustrous and green, while the lower surface is more dull and paler in color. The flowers are absent of sepals and petals, the males are greenish-yellow in oblong clusters at the branch tips. Female flowers are paler green, occurring in ball-like dangling clusters. The fruit is made up of numerous capsules that are consolidated into a spiny ball. The balls are generally about 3 cm in diameter with stiff spines forming on the tips. These fruits are generally the biggest complaint when it comes to this species as they can be a hazard on the ground if stepped on or tripped over.

Image Citation: Chris Evans, University of Illinois, Bugwood.org

The Sweetgum is generally found in rich woods, slopes, fields, residential and urban landscapes, low woods, swamp margins and floodplains. It is native to the United States and can be found as far West as Texas in the South to Southern Illinois in the North continuing to the East Coast New Jersey and Maryland in the North and Central Florida in the South.

Image Citation: Chris Evans, University of Illinois, Bugwood.org

The American Sycamore also has ball like fruit, however they are not Spiked like the Sweetgum. The Japanese Maples leaves may be confused with the Sweetgum but the fruits are completely different (the Sweetgum having a spiky ball and the Maple having paired samara). The Sweetgum is an important tree to the Eastern landscape. It is recommended for hardiness zones 5-9.

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