. The algae. Algae. EUPHYCOPHYTA I53 Structure, even though the growth is still confined to the apex, marks the highest development of Church's consolidated or cable type of construction. The cells of the cortex are smaller than in other members of the family. The medulla comprises larger prim- ary cells with smaller secondary hyphae interwoven among them. The end cells of the assimilators often have a much-thickened outermost wall. Branching of the axial threads is monopodial as in Mesogloia. The oblong unilocular sporangia are borne at the base of the assimilatory filaments, but plurilocular
. The algae. Algae. EUPHYCOPHYTA I53 Structure, even though the growth is still confined to the apex, marks the highest development of Church's consolidated or cable type of construction. The cells of the cortex are smaller than in other members of the family. The medulla comprises larger prim- ary cells with smaller secondary hyphae interwoven among them. The end cells of the assimilators often have a much-thickened outermost wall. Branching of the axial threads is monopodial as in Mesogloia. The oblong unilocular sporangia are borne at the base of the assimilatory filaments, but plurilocular sporangia are un-. Fig. 83 Chordaria divaricata. A, plant ( x §). B, apex of young plants showing commencement of cortication. C, apex of older plant of C flagelliformis showing structure of thallus. a =assimi- lator. D, unilocular sporangia ( x 300). (A, D, after Newton i B, C, after Oltmanns.). 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 Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press
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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae
