Manual of Grasses for North America

Manual of Grasses for North America PDF

Author: Mary E. Barkworth

Publisher: University Press of Colorado

Published: 2007-09-15

Total Pages: 1552

ISBN-13: 1457180987

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Grasses are the world’s most important plants. They are the dominant species over large parts of the earth’s land surface, a fact that is reflected in the many different words that exist for grasslands, words such as prairie, veldt, palouse, and pampas to mention just a few. As a group, grasses are of major ecological importance, as soil binders and providers of shelter and food for wild animals, both large and small. Some grasses, such as wheat, rice, corn, barley, rye, tef, and sugar cane are major sources of calories for humans and their livestock; others, primarily bamboos, are used for construction, tools, paper, and fabric. More recently, the seed catalogs that tantalize gardeners each winter have borne witness to an increasing appreciation of the aesthetic value of grasses. The Manual of Grasses for North America is designed as a successor to the classic volume by Hitchcock and Chase. It reflects current taxonomic thought and includes keys, illustrations, and distribution maps for the nearly 900 native and 400 introduced species that have been found in North America north of Mexico. In addition, it presents keys and illustrations for several species that are known only in cultivation or are of major agricultural significance, either as progenitors of bread wheat and corn or as a major threat to North American agriculture because of their ability to hybridize with crop species. The Manual of Grasses for North America is a major reference work for grasses that will retain its value for many years.

An Elementary Text-Book of Agricultural Botany

An Elementary Text-Book of Agricultural Botany PDF

Author: Michael Cresse Potter

Publisher: Palala Press

Published: 2015-09-01

Total Pages: 300

ISBN-13: 9781340983611

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Agricultural Botany

Agricultural Botany PDF

Author: William Darlington

Publisher: Forgotten Books

Published: 2015-06-02

Total Pages: 329

ISBN-13: 9781330270080

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Excerpt from Agricultural Botany: An Enumeration and Description of Useful Plants and Weeds, Which Merit the Notice, or Require the Attention, of American Agriculturists Agriculture, in a broad and legitimate sense, being a comprehensive system of Natural Science - involving more especially a practical acquaintance with the useful portion of the Vegetable Creation, - I have long thought it due to the Profession, and desirable in every point of view, that the young Farmers of the United States should acquire an exact knowledge of the Plants which it immediately concerns them to know; and that they should be enabled to designate, and treat of them, with the precision and methodical perspicuity which belong to scientific language and arrangement. Under this impression, and in the hope of promoting an object deemed so important, the present work has been compiled. In submitting it to those for whom it is more particularly intended, I am not unaware that its technical features are ill-suited to the notions of many plodding disciples of the old school of Agriculture, who despise every form of knowledge derivable from Books, - and whose ideas never stray beyond the manual operations of the field and the barn-yard. It is scarcely probable, indeed, that any written treatise - though couched in the most familiar dialect - would obviate the objections, or conciliate the prejudices, of such antiquated tillers of the soil. My views, therefore, have not been directed to that unpromising quarter. I address myself to the youthful and aspiring Agriculturists of our country, who seek to elevate their noble Profession to its just rank among human pursuits, - and who feel that the exercise of intellect, as well as of muscle, is indispensable to the accomplishment of their purpose. I have preferred to treat of the Plants, which it more immediately behoves the farmer to be acquainted with, according to the most approved method of our day, and in the language of Systematic Botany. By exhibiting as much of the classification, or frame-work of the Science, as is requisite to present the Genera and Species, here described, in their natural and relative positions, the Student will be enabled to comprehend their connection with the other portions of the System, and to examine them, as the Geologists say, in situ. In that process, he will necessarily have to learn something of their structure, and essential character; and that I should consider as an important advantage, - even if his researches should there terminate. His knowledge, however limited, will be established on a correct basis, - and will be always available in his intercourse with men of science: But, to those who may subsequently resolve upon a more extended acquaintance with the vegetable kingdom, such knowledge will be a clear gain, and a valuable preliminary step; that step which, according to the proverb, is the only one which costs. 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.