. Fig. Z-ll.—Anabacna fi/radearum. A, Coml-like surface-roots of Ci/can. li, Tniiis- verse and longitudinal sections of A ; the double line indicates the distribution of the Aox^oo. (V. Tubenf del.) completely siiut in. In this condition it is absululcly de- pendent on nourishment derived from the host-cells, and seems to thrive on it. Xo outward symptoms of disease can be observed on Giamera with enclosed Nostoc, the local destruction of the cell-contents, the loss of starch, and the filling up of the tissues with filaments of Nostoc having apparently n<» effect. The species of Gunnera hav
. Fig. Z-ll.—Anabacna fi/radearum. A, Coml-like surface-roots of Ci/can. li, Tniiis- verse and longitudinal sections of A ; the double line indicates the distribution of the Aox^oo. (V. Tubenf del.) completely siiut in. In this condition it is absululcly de- pendent on nourishment derived from the host-cells, and seems to thrive on it. Xo outward symptoms of disease can be observed on Giamera with enclosed Nostoc, the local destruction of the cell-contents, the loss of starch, and the filling up of the tissues with filaments of Nostoc having apparently n<» effect. The species of Gunnera have a very short stem with a growing point hardly raised above the level of the soil, so that the Nostoc easily finds its way there. Xo algae have been found in the petiole and lamina of the gigantic leaves. Gunnera may easily be cultivati'd although it contains no Nostoc. Jonsson ^ regards Nostoc f/unncrrn- as identical with ,\'. jmncti- '.Jonsson, Botnu. Xofiscr, 1894.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
