Abstract
THIS monographic treatment of the abundant diatom genus Synedra will appeal chiefly to the specialist, but is not without points of general interest. The author supports a classification based on the features of the valves rather than on the characters of the chromato-phores and throws out a suggestion that nuclear structure may afford a basis for distinguishing the larger groups of diatoms. No proper spindle is formed during nuclear division in Synedra, and a centrosome is lacking. In the considerable section devoted to ecological data it is made clear that all species of Synedra require water with a certain minimum lime-content. It is significant that, in the course of more than a year's continuous observation, no auxospore-formation was observed.
Die Gattung Synedra in systematischer, zytologischer und ökologischer Beziehung.
Dr.
Konrad
Gemeinhardt
Von. (Pflanzenforschung, Heft 6.) Pp. iv + 88 + 4 Tafeln. (Jena: Gustav Fischer, 1926.) 6 gold marks.
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Die Gattung Synedra in systematischer, zytologischer und ökologischer Beziehung . Nature 118, 729 (1926). https://doi.org/10.1038/118729d0
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DOI: https://doi.org/10.1038/118729d0