. Botanisk tidsskrift. Botany; Plants; Plants. — 356 — better conserved material both of Bangia virescens Fosl. and of the Ice- landic variety of U. consociata is at hand, it must be left undecided, whether they are identic or not, but I think that B. virescens will turn out to be a species of Ulothrix most nearly related to U. consociata Wille, f. geniculata nova forma. It forms a matted growth of light-green colour on rocks at high-. Fig. 8. Ulothrix consociata var. islandica f. geniculata. a (300:1) a fragment of a sterile filament; b (550: 1) showing the lateral nuclei; c (311 :1) a portio
. Botanisk tidsskrift. Botany; Plants; Plants. — 356 — better conserved material both of Bangia virescens Fosl. and of the Ice- landic variety of U. consociata is at hand, it must be left undecided, whether they are identic or not, but I think that B. virescens will turn out to be a species of Ulothrix most nearly related to U. consociata Wille, f. geniculata nova forma. It forms a matted growth of light-green colour on rocks at high-. Fig. 8. Ulothrix consociata var. islandica f. geniculata. a (300:1) a fragment of a sterile filament; b (550: 1) showing the lateral nuclei; c (311 :1) a portion of a filament showing a sporangium. Fig. 9. Ulothrix consociata var. islandica f. geniculata. a, b, c fragments of filaments showing the shape of the chromatophore and the lateral pyrenoid. (311 : 1.) water mark. The filaments are 13 —15 thick, either straight or irregu- larly curved and not rarely kneed at more or less regular intervals. I have not seen basal rhizoids, but short, lateral rhizoids usually occur at the knees of the filaments either singly or two together. I have occasion- ally seen somewhat ramified filaments, some of the branches are, I think, to be regarded as articulated rhizoids. The branching occasionally reminds somewhat of the ramification of Rhizoclonium as a part of the filament, replaced by the rhizoids, apparently becomes lateral. My specimens are generally unbranched, and I suspect that the branching must be regarded. 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 Botaniske forening i København. København : H. Hagerups Forlag
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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
