erner bie ecfige03 ac£;f t o cf e, Rivularia natans ($ig. 181 d), btegemeine, im ^fyeine öorfommenbe 3 ottenalge, Thorearamosissima ($ig* 181 e) — ferner ber £aufenbaft (Btfyötex 23rief. 401 ober *H* 0 f $ f a i er) f a b e n , Batrachospermum mo-niliforme (*yig. 181 f), freierer gallertartig in…
Microscopy
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