. The British Charophyta. Characeae -- Great Britain. STRUCTUEE AND DEVELOPMENT. 51 and therefore in the opposite direction to the torsion of the stem (Fig. 21 v). The upper cell remains short, and in the Nitellese is again divided into two by a horizontal septum (Fig. 22, dd). The five or ten upper cells, as the case may be, combine to form a crown to the oogonium—the coronula. The five elongated cells adhering along their lateral lines of contact form an envelope (Fig. 22 i-iii) which encloses the oosphere. These spiral cells are usually,. Please note that these images are extracted from sca
. The British Charophyta. Characeae -- Great Britain. STRUCTUEE AND DEVELOPMENT. 51 and therefore in the opposite direction to the torsion of the stem (Fig. 21 v). The upper cell remains short, and in the Nitellese is again divided into two by a horizontal septum (Fig. 22, dd). The five or ten upper cells, as the case may be, combine to form a crown to the oogonium—the coronula. The five elongated cells adhering along their lateral lines of contact form an envelope (Fig. 22 i-iii) which encloses the oosphere. These spiral cells are usually,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Groves, James; Bullock-Webster, George Russell, b. 1858. London, The Ray society
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