(Ulmaceae)

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Siberian Elm (Ulmus pumila)

An import from central Asia, Siberian Elms have naturalized in New Mexico and other states. Look for alternating leaves that are smaller when water is scarce. In the fall, they put out a blizzard of samaras (winged seeds). In time, Siberian Elms grow into large shade trees, and in earlier decades they were a favorite Albuquerque tree. Their roots have a special knack for working their way into sewer lines and clogging them.