The seeds appear before the trees leaf ... tree. Native American elms (Ulmus americana) have slightly fuzzy winged seeds, and the trees are better-known for having been decimated by Dutch elm ...

1. Gnomonia ulmea (Schw.) Thüm., the cause of the most common elm leaf spot in America, has been reported as occurring on five of the six native species of elm in this country and is of wide ...

If the leaves they find are not on the sheet, use a tree identification book from the library. They can write what tree each leaf comes from on the appropriate page. 6 When they've finished ...