Abstract
IN 1931, Prof. F. Tobler delivered at the invitation of the University of London three lectures on lichens. The publication under review is the outcome of these lectures. In it Prof. Tobler has endeavoured to put forward a well-founded, general and physiological conception of the group of lichens. He wanted to show and make clear what he and his school con sidered that a lichen was and what a lichen could do. He mentions four important characteristics of the lichen. The algae present in the form of gonidia must be more or less intimately connected with fungal hyphse, to insure free exchange of food-material. A morphological differentiation mighi be expected separating the lichen from even allied fungi. The physiological success of such a symbiosis is, of course, also necessary. Vegetative reproduction by such organs as soredia, for example, is an important feature in many species of lichens.
Die Flechten: eine Einführung in ihre allgemeine Kenntnis.
Auf Grund neuerer Forschungen und kritisch dargestellt von Prof. Dr. Friedrich Tobler. Pp. v + 84. (Jena: Gustav Fischer, 1934.) 5.50 gold marks.
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D., O. Die Flechten: eine Einführung in ihre allgemeine Kenntnis . Nature 134, 721 (1934). https://doi.org/10.1038/134721b0
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DOI: https://doi.org/10.1038/134721b0