Jugendform und Blütenreife im Pflanzenreich

Abstract

IN this work the author has presented much interesting information from the point of view of an inquiry into the relations between sexual maturity and the conditions attained by the vegetative organs, especially where these from any cause show tendencies to marked changes of aspect during the development of the plants. Many of his examples are drawn from his personal investigations, the inquiry having suggested itself to him during a residence in Western Australia, where peculiarities in these relations appear to be remarkably frequent, and to be often traceable to the environment. He has also made a careful study of such published works as bear on this subject, and has used the materials derived from them with good effect as regards both the facts and the causes of abnormal conditions, and the inferences to be drawn from them. His statement of the whole subject, and of the conclusions that he believes can be fairly based on what is yet known of it, is well and clearly put, and shows the need of further inquiry, as well as the risk of pressing inferences beyond their fair limits at times.

Jugendform und Blütenreife im Pflanzenreich.

By Dr. L. Diels. Pp. 130; with 30 illustrations in text, each with several figures. (Berlin: Gebrüder Borntraeger, 1906.) Price 3.80 marks.