Wisconsin State Tree - Sugar Maple - Acer saccharum
Leaf: Opposite, simple and palmately veined, 3 to 6 inches long, 5 lobed with entire margin; green above, paler below.
Flower: Yellow to green, small, clustered, hanging from a long (1 to 3 inch) stem, appearing with the leaves.
Fruit: Two-winged horseshoe-shaped samaras about 1 inch long, appearing in clusters, brown when mature in Autumn.
Twig: Brown, slender and shiny with lighter lenticels, terminal buds brown and very sharp pointed.
Bark: Variable, but generally grayish brown,on older trees may be furrowed, with long, thick irregular curling outward ridges.
Form: Medium to tall tree (to 100 feet) with very dense elliptical crown.
Photos courtesy: Michael Aust, John Baitey, Ctaude L. Brown, Bruce Bongarten,
Susan D. Day, Edward C. Jensen, Richard E. Kreh, Larry H. McCormick, Alex X.
Niemiera, John A. Peterson, Oana Popescu, John R. Seiter, David W. Smith, Kim
C. Steiner, James E. Ward, Rodney E. Will, Shepard M. Zedaker.
Text written by: John R. Seiter, Edward C. Jensen, Or John A. Peterson