The Comparative Anatomy And Phylogeny Of The Coniferales

Author : Edward O. Jeffrey
Publisher : Forgotten Books
ISBN 13 : 9781528411738
Total Pages : 30 pages
Book Rating : 4.4/5 (117 download)

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Download or read book The Comparative Anatomy and Phylogeny of the Coniferales, Vol. 1 written by Edward O. Jeffrey and published by Forgotten Books. This book was released on 2017-10-29 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Comparative Anatomy and Phylogeny of the Coniferales, Vol. 1: The Genus Sequoia IN the' present and following memoirs, it is my intention-to describe-certain features of the anatomy of the Coniferales which appear to be of interest. The actual state of our knowledge Of the morphology and history of the group is not sufficient to justify much certainty as to its classification, and consequently additions from any standpoint are likely to be of value. The prevailing views as to the relationship of the various orders of the Coniferales are based almost entirely on reproductive characters, and valuable as these must always be, they constitute, nevertheless, but a single line of evidence. The study of. The anatomy of the older groups of Gymnosperms has done so much to clear up the question of their affinities that it does not seem unreasonable to expect that a good deal should be learned from investigations carried out on the same lines in the case of the Coniferales, the prevailing Gymnosperms of the present day. It is to be anticipated that the results of such investigations will serve to correct and supplement the conclusions drawn from the study of the reproductive organs alone. The existing Sequoia's are chosen as the subject of the first memoir, both because of their interest as the sole survivors of a genus which once flourished in many species throughout the entire northern hemisphere, and because investigations, already some what extensive although as yet incomplete, make it apparent that the genus Sequoia presents a striking example of those rare and important forms which so infrequently per sist as links of transition between distinct and different natural orders of the present day. 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.