. A textbook of botany for colleges and universities ... Botany. THALLOPHYTES 39 and Spirogyra, the latter being especially abundant and long used for laboratory study. They are both filamentous plants with elongated cells, and differ from one another in the form of the conspicuous chloro- plasts, which in Zygnema are two radiate or starlike bodies in each cell gf-^s^. 106 -' Figs. 106—iro. — Spirogyra: 106, cell showing the spiral bandlike chloroplast con- taining pyrenoids, and the centrally swung nucleus; 107, cells developing a conjugating tube; 108, conjugating tube complete; 109, passage
. A textbook of botany for colleges and universities ... Botany. THALLOPHYTES 39 and Spirogyra, the latter being especially abundant and long used for laboratory study. They are both filamentous plants with elongated cells, and differ from one another in the form of the conspicuous chloro- plasts, which in Zygnema are two radiate or starlike bodies in each cell gf-^s^. 106 -' Figs. 106—iro. — Spirogyra: 106, cell showing the spiral bandlike chloroplast con- taining pyrenoids, and the centrally swung nucleus; 107, cells developing a conjugating tube; 108, conjugating tube complete; 109, passage of one protoplast through the tube; 110, the zygospore. — After Coulter. (fig. Ill), and in Spirogyra, one or more bands that extend spirally from one end of a cell to the other (fig. 106). Spirogyra may ht selected to represent the family. The conspicuous green, spiral, bandlike chloroplasts lie peripherally in the cell and contain conspicuous, nodule-. 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
