Abstract
CYTOPLASMIC organelles associated with the cell walls of Chara and Nitella were illustrated in glutaraldehyde-fixed material by Crawley1. Similar structures were demonstrated in Chara by Barton2. These organelles consist of a network of fine tubules. They are bounded on the inner side by a membrane continuous with the cell membrane or plasmalemma and on the outer side are in contact with the cell wall. It was suggested that they might play a part in the synthesis of cell wall material.
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