Tilia americana; basswood [Malvaceae] Tall (100'+) native trees with large heart-shaped leaves (5-6" long, 3-4" wide).  Flowers are fragrant, insect-pollinated, and produced in midsummer, all unusual for a Wisconsin tree.  The fruit is small (¼" diameter), spherical, and nutlike with an edible seed, and is attached to a conspicuous leaf-like bract 4-5" long.  Mature bark is dark gray, ridged, and furrowed.  Stumps sprout extensively after cutting, so multiple-stemmed basswoods are common in second-growth woods.  Occurs widely on rich soils with sugar maple.  [098]