About Elm Trees - Descriptions of ten species of Ulmus, how to identify different species, basic biology of the genus, and advice on caring for elms in the landscape. Ulmus procera - image Ulmus canescens - image The Return of the Elm - Discusses the status of elms in the U.S. nursery industry in 2000, including the availability of new disease-resistant cultivars of American elm, Asian and European species of horticultural importance, and other production and pathology concerns. Ulmus glabra: Wych Elm - Photographs of this tree, its leaves and fruit. Ulmus rubra - Distribution and Occurrence; Value and Use; Characteristics; Fire Ecology Ulmus alata: Winged Elm - Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Ulmus parvifolia: Chinese Elm - Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Ulmus pumila: Siberian Elm - Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Ulmus rubra: Slippery Elm - Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Ulmus thomasii: Rock Elm - Tree identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form.