The Morphology of the Podocarpineae

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Excerpt from The Morphology of the Podocarpineae: A DissertationThompson (20) lays a good deal of stress on the megaspore mem brane as a primitive character. It is entirely eliminated in Taxineae, but characterizes all the members of the other family except Podo carpus itself. As the ovulate structures of the type genus are by far the most specialized of the family, this is not surprising. Miss robertson thought the megaspore membrane and spongy tissue were in some way correlated with the presence of winged pollen, but their occurrence in Saxegothaea with its wingless microspores breaks down this supposition.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.