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OverviewExcerpt from On New Plants From the Erian and Carboniferous, and on the Characters and Affinities of Pal ozoic Gymnosperms The most remarkable peculiarity, however, appears in the leaves, which instead of having the veins parallel, have them forking at a very acute angle, and Slightly netted by the spreading branches of the veins uniting with the others near them. This allies the leaves with those of the pro visional genus Noeggerathia, some of which have this pecu liarity, as also certain modern Cycads of the genus Zamia, which Professor Penhallow has kindly pointed out to me. Leaves with forking veins and even anastomosin g to a'certain extent, are also known in certain fossils of the genera Otoza mites and Nceggerathiopsis, &c., which are referred to Cycads, and the modern Cycadaceous genus Stangeria has forking veins. The present plant would seem to be a form of Cordaiteae, tending to Nceggerathia, which most paleo-botanists believe to have been a gymnospermous genus allied to Cordaites. The affinities however, so far as can be judged, are nearer to the latter; and following the example of Grand 'eury in his nomenclature of the genera, I would propose the name Dictyo-cordaites for the present genus, and the Specific name Lacoi, in honor of its discoverer. I may add here that the general aspect of this plant must have been so near to that of a Carboniferous species of Cordaites, as restored many years ago in my Acadian geology,2 that I reproduce the figure here. 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. Full Product DetailsAuthor: John William Dawson, SirPublisher: Forgotten Books Imprint: Forgotten Books Dimensions: Width: 15.20cm , Height: 0.20cm , Length: 22.90cm Weight: 0.064kg ISBN: 9781334748912ISBN 10: 1334748918 Pages: 38 Publication Date: 29 September 2018 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In stock We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |