American Elm Small 201×320 Medium 402×640 Large 644×1024 Download Tiff Original 1509×2400 | (714.9 KB) Description Samara of the American Elm, winged all around. Keywords Botany, plants, pollen, pollination, seeds Galleries Trees: D-H Source: Asa Gray The Elements of Botany for Beginners and for Schools (New York, Cincinnati, Chicago: American Book Co., 1887) Courtesy the private collection of Roy Winkelman
