Beihefte zum Botanischen Centralblatt, 1911, Vol. 27

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Excerpt from Beihefte zum Botanischen Centralblatt, 1911, Vol. 27: Erste Abteilung, Anatomie, Histologie, Morphologie und Physiologie der PflanzenThe staminate cones make their appearance, at or near the tips of the branches, as early as September of the year preceding pollination. The mature cones at the time of pollination is shown in text-figure 1. Young microsporangium, as observed in early November, has the wall consisting of two or three layers of cells and just within, in immediate contact with the archesporium, there is a layer of tapetum-cells. The archesporial cells are found in constant division during the autumn and the pollen mother-cells are formed before the end of the year.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.