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In Missouri, it typically occurs in low moist ground and along streams throughout the state (Steyermark). The wood of American Elm and its cultivars has interlocking grains. Ulmus americana is a deciduous Tree growing to 25 m (82ft) by 25 m (82ft) at a medium rate. The tree likes sun at the location and the soil should be alluvial soils. It is hardy to zone (UK) 3 and is not frost tender. The two sides of the leaf base are often asymmetrical. Ulmus americana is a tree with alternate, simple leaves. it can be found in swamps, bottomland forests, moist slopes, and in areas with especially nutrient-rich soils. The leaf margins are doubly toothed (each large tooth often has a smaller tooth upon it). The Tree is a deciduous tree, it will be up to 45 m (148 ft) high. Leaves can be variable in shape and size. The American elm tree (Ulmus americana) is a large stately tree that complements the landscape. Noteworthy Characteristics. Large, height usually 50' to 70' with a diameter of 24" to 48", although it can reach a height of 100' with a diameter of up to 48"; wide-spreading branches that droop at the ends; the crown is vase-shaped. Calvin F. Bey. American elm (Ulmus americana), also known as white elm, water elm, soft elm, or Florida elm, is most notable for its susceptibility to the wilt fungus, Ceratocystis ulmi.Commonly called Dutch elm disease, this wilt has had a tragic impact on American elms. Ulmaceae -- Elm family. (References consulted) Frequent Mushroom Associates: Any experienced morel hunter east of the Rocky Mountains will tell you that dying and recently dead elms produce yellow morels, often in stunning numbers. The species is hermaphrodite (has both male and female organs) and is pollinated by Wind. It is in flower in May, and the seeds ripen in June. Each fruit of an elm consists of a single seed, surrounded by a flat, papery wing-like border. The American Elm is botanically called Ulmus americana. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Fruit: A small samara. Fruit: Fruit is a winged seed called a samara: flat, egg shaped, 1/3 to ½ inch long, surfaces hairless but with a dense fringe of short, white hairs around the edge, the tip often cleft with two hook-like lobes. When Does an Elm Tree Fruit?. It appears that the birds prefer the seeds of the American Elm in comparison to the larger seeds of the Dutch elms (Ulmus x hollandica) near Benton Hall and those making up the Elm Walk between 15th St. and 11th St. Ulmus americana, commonly called American elm, is a medium to large deciduous tree, typically growing to 60-80’ (less frequently to 130’) tall with a vase-shaped, broad-rounded crown.It is native to eastern and central North America. GENERAL BOTANICAL CHARACTERISTICS : American elm is a deciduous, fast-growing, long-lived tree which may reach 175 to 200 years old with some as old as 300 years [5,27,53].In dense forest stands, American elm may reach 100 to 200 feet (30-36 m) in height and 48 to 60 inches (122-152 cm) in d.b.h. In nature. The peak in the population seems to coincide with the maturation of the fruit (seeds) of the many elms on the campus. Phonetic Spelling ULM-us a-mer-ih-KAY-nah Description. Ulmus americana, or American Elm, is a deciduous tree, native to North Carolina, that can grow to 80 to 100 feet tall with a trunk diameter of 2 to 5 feet.Older trees sometimes develop buttresses that expand their base. If fruit production is a concern, plant American Elm cultivars like Princeton Elm individually to avoid cross pollination. The leaves are oblong and the flowers are brownish-purple. Ulmus americana L.. American Elm. 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