Trees of Wisconsin

Key to the Trees of Wisconsin

112. Lacking spur branches, the leaves strongly 2-ranked; petiole short, less than 5 mmlong; leaves coarsely single-toothed (sometimes partially double-toothed); fruit a dry, flattened papery samara.	Ulmus pumila
112. Often developing spur branches on mature branches (but not necessarily on sprouts or the fastest growing branches); petioles longer than 5 mm; leaves finely single toothed; fruit an apple or pear.	Malus pumila Malus sieboldii Pyrus communis