. The algae. Algae. Fig. 117 Cystoseira. A, C. ericoides plant ( x |). B, portion of same enlarged ( x 4-5). C, germling. D, same, rather older. E, diagram to show nature of branching in C abrotanifolia. (A, B, after Newton; C-Ej after Oltmanns.) Cystoseiro-Sargassaceae SARGASSACEAE:C3^5^05ezra(rv5^05 bladder; s^zVa, chain). Fig. 117 The much-branched perennial thallus is either cylindrical or compressed and arises from a fibrous woody holdfast which has more or less the structure of a conical cavern. The primary branches arise from the main stipe towards the base and divide above into filifor

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. The algae. Algae. Fig. 117 Cystoseira. A, C. ericoides plant ( x |). B, portion of same enlarged ( x 4-5). C, germling. D, same, rather older. E, diagram to show nature of branching in C abrotanifolia. (A, B, after Newton; C-Ej after Oltmanns.) Cystoseiro-Sargassaceae SARGASSACEAE:C3^5^05ezra(rv5^05 bladder; s^zVa, chain). Fig. 117 The much-branched perennial thallus is either cylindrical or compressed and arises from a fibrous woody holdfast which has more or less the structure of a conical cavern. The primary branches arise from the main stipe towards the base and divide above into filiform branches and branchlets, but when the latter do not develop very far one gets what is known as the 'erica' and 'lyco- podium' types, so called because of their resemblance to members of those genera. Seriate rows of small air vesicles may be inserted in the branches, and when this occurs the row of vesicles must be regarded as a modified branch. On the approach of the dormant season some species shed a considerable proportion of the branch system so that the plant may appear very different. The plants are monoecious or dioecious, the conceptacles being borne in terminal 208. 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 work.. Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press