American Fossil Cycads (Classic Reprint) PDF Download
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Author: G. R. Wieland
Publisher: Forgotten Books
ISBN: 9780331922233
Category : Science
Languages : en
Pages : 332
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Book Description
Excerpt from American Fossil Cycads Bundle system of seed Structure of megaspore bundle supply Structure and significance of the axis of the cones. 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.
Author: G. R. Wieland
Publisher: Forgotten Books
ISBN: 9780331922233
Category : Science
Languages : en
Pages : 332
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Book Description
Excerpt from American Fossil Cycads Bundle system of seed Structure of megaspore bundle supply Structure and significance of the axis of the cones. 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.
Author: Carnegie Institution of Washington
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 664
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: George Reber Wieland
Publisher:
ISBN:
Category : Cycads
Languages : en
Pages :
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Book Description
Author: Kirk R. Johnson
Publisher: Fulcrum Publishing
ISBN: 1555914519
Category : Travel
Languages : en
Pages : 222
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Book Description
The travels of a paleontologist and an artist as they drive across the American West in search of fossils. Throughout their journey, they encounter "paleonerds" like themselves, people dedicated to finding everything from suburban T. rexes to ancient fossilized forests.
Author: Frank J. Daniels
Publisher:
ISBN: 9780966293814
Category : Mineralogy
Languages : en
Pages : 0
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Book Description
Author: Dukinfield Henry Scott
Publisher: Concept Publishing Company
ISBN:
Category : Plants
Languages : en
Pages : 266
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Book Description
Author: Jones Dl.
Publisher: Smithsonian
ISBN: 9781588340436
Category : Gardening
Languages : en
Pages : 456
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Book Description
Cycads superficially resemble palms and are often misidentified as such. However, cycads are actually a unique assemblage of primitive plants that have been around for at least 250 million years. They have become highly sought after for gardens, both private and public, and their present status as endangered plants has engendered an upsurge of interest in their conservation. With Cycads of the World, David Jones has achieved that difficult task of writing a scientifically accurate text, which is both easy to read and to understand. For this second edition David Jones has added information covering over 100 new species and subspecies of cycads, and updated his material on the 200 species from the first edition. Each entry includes a full description, distribution and habitat information, and a detailed cultivation and propagation guide. Over 360 color photographs plus many other illustrations and maps facilitate easy identification for all living species. This second edition of Cycads of the World makes a fine addition to the library of anyone interested in exotic plants, including gardeners, landscape architects, horticulturalists, botanists, and the curious reader alike.
Author: Knut Norstog
Publisher: Comstock Publishing Associates
ISBN:
Category : Cycads
Languages : en
Pages : 424
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Book Description
Thoroughly referenced and generously illustrated, this book discusses all aspects of cycadology. A small group of ancient palmlike seed plants noted for their beautiful foliage and often brightly colored cones and seeds, cycads are believed to have been among the first seed-bearing plants. Seed bearing was the basis for their worldwide dominance from about 300 million years ago to about 70 million years ago, when today's familiar flowering plants gained ascendancy. In recent years, interest in cycads has increased, partly as a result of the need for a more complete identification of the range of toxic and carcinogenic substances these plants produce and partly because of the recognition that some compounds from cycads may prove valuable in biomedical research. Many cycads have recently been identified as endangered species, including some that seem to have survived virtually unchanged since the Mesozoic era. Cycads have a specific importance, now at risk of being lost forever, for the information they offer on the origins and evolution of seed plants. Knut J. Norstog and Trevor J. Nicholls discuss cycad anatomy, reproduction, physiology, and growth. They also focus on population biology and the fossil cycadophytes, as well as genera and species from both the Old World and the New World. The Biology of the Cycads is illustrated with numerous maps, diagrams, and drawings, as well as more than 350 photographs, in black and white and in color.
Author: Spencer G. Lucas
Publisher: New Mexico Museum of Natural History and Science
ISBN:
Category : Science
Languages : en
Pages : 506
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Book Description
