Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 625
of vegetation, each of the formerchoosing its own alga, just as the latter mostly attach themselves toparticular victims. The peculiarity in the parasitism of the lichen-fungi lies in the fact that they are not attached to their host externallyat any one particular spot, and do not penetrate into… … Fig. 436.—LejJtogiavi scotinum: Vertical section of the gelatinous tliallus, magnified550 times. An epidermal layer clothes the inner tissue, which consists for the mostpart of formless and colourless jelly, in which the coiled strings of gonids lie ;single larger cells of the strings (the limiting…
Microscopy
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