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Sadly, the American elm (Ulmus americana) can no longer be recommended because it is vulnerable to a devastating pathogen called Dutch elm disease. Dead elm trunk of American Elm (Ulmus americana) 85 cm in diameter. Other Common/Trade Names: None Scientific Name: Ulmus americana Best Characteristics for Identification: Ulmiform arrangement. Ulmus americana … The two sides of the leaf base are often asymmetrical. The leaves are alternate with a doubly toothed margin and unequal base. Slippery elm (Ulmus rubra Muhl.) American Elm is a deciduous tree that may grow 80 to 100 feet tall. 0. By: Dan Petters. Cloudflare Ray ID: 60541654be0a16ea 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. In Missouri, it typically occurs in low moist ground and along streams throughout the state (Steyermark). These include the following: 'Jefferson', 'New Harmony', Prairie Expedition®, 'Princeton' , and 'Valley Forge'. International Plant Names Index. Published online. Leaves are alternate, simple, 4–6 inches long, 2–3 inches wide, broadest at or below the middle with coarse, sawtooth edges. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Blooming in the spring, nearly indistinguishable from U. serotina without knowing blooming time: Ulmus americana (American elm) 3. This large, fast-growing tree is tolerant of many adverse site conditions. In nature, it can be found in swamps, bottomland forests, moist slopes, and in areas with especially nutrient-rich soils. Published on the internet. Leaves can be variable Quite similar to the more common American Elm (Ulmus americana), the two are quite difficult to tell apart. • Insect visitors include borers, leaf miner, beetles, mealy bugs, caterpillars and scale.Development of varieties that are resistant to Dutch elm disease is ongoing. Single row of large earlywood pores. Scientific name: Ulmus americana Pronunciation: UL-mus uh-mair-ih-KAY-nuh Common name(s): American elm Family: Ulmaceae USDA hardiness zones: 2A through 9B (Figure 2) Origin: native to the eastern half of the United States, in addition to adjacent Canadian provinces UF/IFAS Invasive Assessment Status: native Uses: reclamation; urban tolerant; specimen Wetwood is a bacterial disease that results in wilting and dieback. American elm Ulmaceae Ulmus americana L. symbol: ULAM Leaf: Alternate, simple, ovate to oblong, 3 to 5 inches long, 1 to 3 inches wide, margin coarsely and sharply doubly serrate, base conspicuously inequilateral, upper surface green and glabrous or slightly scabrous, paler and downy beneath. Click on images of American Elm to enlarge. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. long (7-15 cm), turns butter-yellow to rich yellow in the fall. 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. Wisconsin River, southwestern Wisconsin, USA. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. The tree has had major problems with Dutch elm disease and is now out of favor when considered for urban tree planting.The vase-shaped form and gradually arching limbs make it a favorite to plant on city streets. American elm is a vase-shaped, medium to large, deciduous tree that typically grows to 60-80’ tall with a broad-rounded crown. The Plants Database includes the following 14 species of Ulmus . June 13, 2002. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Dutch elm disease, a fatal fungal disease spread by airborne bark beetles, attacks the water-conducting tissue of the tree, resulting in wilting, defoliation and death. 2020. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. 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