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.
Conservation; Photos and text by: John Seiler, Edward Jensen,
Alex Niemiera, and John Peterson;Silvics reprinted from Ag
Handbook 654; range map source information