Okay, not a tree, but a small shrub. Spicebush (Lindera benzoin) is about waist to head high, sometimes a bit sprawling. You’ll probably never even notice it except that it has these tiny brilliant lemon yellow clusters of flowers along the branches.
It’s easy to confuse it with Sassafras as they both have tiny flower clusters that are a bright yellowish green color. But Sassafras blooms on the ends of the branches, Spicebush blooms along the stem.
The name Spicebush, and the species name benzoin, come from the fact that the foliage is aromatic when crushed. The berries are edible and highly priced by birds in the fall. The bushes grow in moist areas in the understory of forests and river drainages.