All photographs are copyrighted and are the property of E. Brunner.
Native or Introduced to Illinois: nativeLeaf: Opposite, pinnately compound, 3 to 5 leaflets (sometimes 7), 2 to 4 inches long, margin coarsely serrate or somewhat lobed, shape variable, green above and paler below.
Flower: Dioecious; yellow-green, in drooping racemes; appearing in April and May.
Fruit: The winged seed is similar to the other maples but occurs in drooping clusters which mature in the fall and remain on the tree for several months.
Twig: The twigs are green to purplish, covered at first with bluish white bloom and later becoming smooth and shiny. The branching is opposite.
Bark: The finely ridged bark is grayish to dark brown in color sometimes with a greenish tinge.
Size/Form/Shape: The boxelder is a fast growing , wide spreading, short stemmed tree of irregular shape. It is of medium size and under favorable conditions it attains a height of 50 to 80 feet and a diameter of 24 inches.
County Distribution Map for Illinois:
Sources for the Sullivan Middle School Tree Identification Guide were obtained though the use of the following sites:
- Illinois Plant Information Network (ILPIN) @ http://www.fs.fed.us/ne/delaware/ilpin/ilpin.html#Background
- List of Woody Plants Native or Naturalized in Illinois @ http://www.inhs.uiuc.edu/~kenr/woody.html
- Tree Species @ http://ostermiller.org/tree/species.html
- Index to Eastern/Central Trees @ http://www.arborday.org/trees/ECtreelist.html
- ISU Forestry Extension Identification of Common Trees of Iowa @ http://www.extension.iastate.edu/Pages/tree/
- Key to Leaves of Virginia Trees @ http://www.fw.vt.edu/dendro/forsite/key/intro.htm
- List of Native Trees for Use Along Roadsides in Illinois @ http://www.inhs.uiuc.edu/~kenr/treetable.html
- The PLANTS Database @ http://plants.usda.gov/