17. American White Elm

In Seattle at least, American white elms, unlike English elms make comparatively few, tiny, and hairy seeds in spring. Also, the leaves color brighter yellow, earlier in autumn. The bark is more ropelike, less chunky. The roots don't sucker. Above all, the American Elm builds an arching, vaselike crown of uplifting branches, from which descend fine branchlets of more refined foliage.