. Dansk botanisk arkiv. Plants; Plants -- Denmark. ørgesen: Rhodophyceæ of the Danish W. Indies. 335 of the filaments. A branchlet is given off from each segment so, that they are placed alternately on both sides of the median hne of the main branch forming in this n^ way two series on both sides of it upon the dorsal side of the branch (Fig. 336 a). The branchlets tend to- wards the top (Figs. 334, 335a) issuing from the mother branch with acute angles; they are monosiphonous, unbranched and, when fully developed, composed of long cylindrical cells about 20 n thick and often more than 10 t
. Dansk botanisk arkiv. Plants; Plants -- Denmark. ørgesen: Rhodophyceæ of the Danish W. Indies. 335 of the filaments. A branchlet is given off from each segment so, that they are placed alternately on both sides of the median hne of the main branch forming in this n^ way two series on both sides of it upon the dorsal side of the branch (Fig. 336 a). The branchlets tend to- wards the top (Figs. 334, 335a) issuing from the mother branch with acute angles; they are monosiphonous, unbranched and, when fully developed, composed of long cylindrical cells about 20 n thick and often more than 10 times as long, only taper- ing slightly towards the summit. The whole branchlet reaches a length of about 1200 |a. The basal cell in the branchlets is short, nearly quadratic, and becomes more or less immersed in the cor- tical layer; the summit of the branchlet is obtuse. The branchlets are rather persi- stent ; in the older, lower part of the fdaments they are dropped' leaving only the basal cells. At some distance from the summit when the branch- let» are already much devel- oped the adventitious bran- ches with continuous growth are formed (Figs. 334, 335 a). These contribute to the ramifica- tion of the plant and are issued now and then without any more definite distance between them. They are mostly issued at the side of a branchlet (Fig. 335 c). I have most frequently found them placed. Fig. 334. Cottoniella arcuata nov Upper parts of filaments. (About 45:1). 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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