The Leaf Spots of the Elm

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Excerpt from The Leaf Spots of the Elm: Thesis About eighteen species of the genus Ulmus are known widely distributed throughout the cold and temperate regions of the Northern Hemisphere. Six of these species, U. Americana, U. Fulva, U. Racemosa, U. Alata, U. Serotina, and U. Crassz'folia, are native to America and occur naturally from Labrador to southern Mexico. None, however, occur west of the Rocky Mountains. U. Alata, U. Crassifolia, and U. Serotz'na are tender and do not grow well in the northern states, but are quite extensively used for lawn and avenue trees in the south. U. Americana, the most widely distributed American species, occurs in practically every state east of the Rocky Mountains, and in Canada. It is the most characteristic tree of the northeastern states, and is very widely used for street planting and as an ornamental tree for lawns. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.