Excerpt from Botanical Companion to the British Pharmacopoeia EN bogens.-stem increasing by internal growth, and having no distinct pith or bark; leaves parallel veined; flowers glumiferous, or arranged in ternary order; embryo mono cotyledonous. Acrogens. - Cryptogamic plants, with distinct stem, con taining vascular tissue; leaves with forked venation, or veinless. 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.