In a recent post the new tree identification Apple app Leafsnap was featured. I collected 5 tree leaves today to see how well it worked.  Here are the results: 1. American elm – It had it listed as its 4th guess. 2. Witch hazel – It was not in the database. I guess it considers it a shrub. 3. Gray birch – Right on its first guess. 4. Cottonwood – Right on its first guess. 5. White ash – It was listed as its 10th guess. There are quite a few exotic trees in the database which are very similar to our native leaves, especially the compound leaves.  It certainly was not perfect but we will test more leaves soon to see if it does better. – Steve Young