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Excerpt from The Alga-Flora of Yorkshire: A Complete Account of the Known Freshwater Algae of the County From the dorsal view this species possesses a regular and well - marked sigmoid curvature. It is nearest to Cl. Lzmula but is not so robust, and the apices though possessmg the slight but characteristic recurvature of the latter species, are narrower. The number of moving corpuscles in each apical locellus was usually about twenty, but sometimes they were as few as five at one pole though normal at the other. There were eight to ten pyrenoids in each semicell. Length 30 p. Breadth 35 - 44 1. 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.