. Dansk botanisk arkiv. Plants; Plants -- Denmark. 388 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. basal part the distance between the furcations is shorter than upwards. At each furcation the thallus is much narrowed being often here only 1 mm broad. Besides this normal ramification proliferations are now and then issued from the margin of the thallus especially near the narrowings. The thallus is shghtly sinuated. The apex of the thallus is broadly rounded. From a transverse section is seen that the thallus consists of cells which are largest in the middle (about 150 ii thick) and i. Fig. 372. Rhody
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 388 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. basal part the distance between the furcations is shorter than upwards. At each furcation the thallus is much narrowed being often here only 1 mm broad. Besides this normal ramification proliferations are now and then issued from the margin of the thallus especially near the narrowings. The thallus is shghtly sinuated. The apex of the thallus is broadly rounded. From a transverse section is seen that the thallus consists of cells which are largest in the middle (about 150 ii thick) and i. Fig. 372. Rhodymenia occidentalis nov. spec. a, transverse section of the thallus (about 125:1); b, part of the cortical layer seen from above (about 350:1). decreasing evenly outwards (Fig. 372, a). All the cells have very thick walls. This parenchymatic tissue is surrounded by a corti- cal layer composed of a single layer of cells; in transverse section these are roundish polygonal, seen from above polygonal (Fig. 372 h). Neither tetraspores nor other organs of reproduction were found in the material. Considering its entire structure it seems to me that the plant agrees very closely with Rhodymenia^ but, if its organs of repro- duction should be found, it is, of course, not impossible that it may turn out to be, for instance, a Gracilaria. As to species of Rhodymenia with which our plant may be compared, Rh. flabellifolia (Bory) Mont. (= Sphærococcus tenui-. 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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