. Dansk botanisk arkiv. Plants; Plants -- Denmark. 278 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. (Fig. 277 c). These are about 200—250« thick, and the cells are nearly quadratic, mostly somewhat shorter than long, about 100 ju broad and Sb ju long. The erect branches are ramified on all sides. The branches grow out to filaments like the mother branch, some of them shorter, some longer. Rhizoids may issue from every cell in the filaments, by means of which they attach themselves to the neighbouring plants. Fig. 277. Polysiphonia ferulacea Suhr, J. Ag. a, base of a plant, b, summit of the same basal f
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 278 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. (Fig. 277 c). These are about 200—250« thick, and the cells are nearly quadratic, mostly somewhat shorter than long, about 100 ju broad and Sb ju long. The erect branches are ramified on all sides. The branches grow out to filaments like the mother branch, some of them shorter, some longer. Rhizoids may issue from every cell in the filaments, by means of which they attach themselves to the neighbouring plants. Fig. 277. Polysiphonia ferulacea Suhr, J. Ag. a, base of a plant, b, summit of the same basal filament c, basal filament with erect filament, d, transverse section of a filament. (a, about 20:1; b, 250:1; c, 20:1; d, 60:1). or other substratum, and when so attached new erect filaments may issue from them. The branches are produced without any connection with the trichoblast (Fig. 278 a). The last mentioned are copiously devel- oped and generally quite coyer the upper end of the filaments, but they are not very persistent and drop early. A trichoblast is developed upon each segment with a V^ divergency. The tetrasporangia occur in the summit of the filaments in long rows, a single one in each segment forming together a screw (Fig. 278 6). The tetrasporangia are about 60/.« Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dansk botanisk forening. Kbenhavn : Dansk botanisk forening
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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
