Elm keys or samaras above the bend in Wagner

Still uncertain of the exact type of elm or whether the two trees are the same.  The seeds or keys are similar but  distributed differently. Sine they are maturing in the fall this would tend to eliminate Slippery elm and rock elm which mature in the spring.

One or both may be the chinese  elm introduced after the spread of Dutch elm disease fungus killed most American elms.

The Thayer reference is almost poetic about eating the samaras of the Siberian elm,maturing in the spring.  I will research any experience with these smaller seeds.  The outer coat can be rubbed off leaving a sunflower like seed.

The first photo shows the more westerly tree with a collection of samaras near the branch. The second is the tree to the east, more sparsely distributed seeds, but this may be random. The seeds themselves are similar. Add to your cereal or salad?