. Dansk botanisk arkiv. Plants; Plants -- Denmark. 304 D ansk Botanisk Arkiv, Bd. 3. Nr. 1. f out from the basal end of the pericentral cells (comp, Fig. 307) and running down in the furrow between these cells (Fig. 305). Most of my specimens were richly provided with stichidia (Fig. 307). As the figure 306 shows, these originate from the first side branch of the trichoblast which issues from the second joint in these. One or two segments in the basal part of the stichidia remain undivided. All the following segments become polysipho- nous with the exception of some of the uppermost ones, whic
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 304 D ansk Botanisk Arkiv, Bd. 3. Nr. 1. f out from the basal end of the pericentral cells (comp, Fig. 307) and running down in the furrow between these cells (Fig. 305). Most of my specimens were richly provided with stichidia (Fig. 307). As the figure 306 shows, these originate from the first side branch of the trichoblast which issues from the second joint in these. One or two segments in the basal part of the stichidia remain undivided. All the following segments become polysipho- nous with the exception of some of the uppermost ones, which are small, ste- rile and not divided. As described by Schmitz (1. c, p. 233) the stichidia are unbranched, but this is only apparently so, accor- ding to Falkenberg's ob- servations. For, as pointed out by this author, a small cell is cut off from each segment by an oblique wall, these small cells pla- ced with a divergency of ^U round the stichidia, being the first beginning of bran- ching. Normally these cells are not further developed, and I have not succeeded in finding any stichidia with branches, but Fal- kenberg happened to find one in which the cells in the. Fig. 307. Lophocladia trichoclados (Mert., C. Ag.) Schmitz. Part of a filament with the lower parts of two trichoblasts and a stichidium. Some of the tetrasporangia have fallen out. The downwards directed out- growths from the two pericentral cells are the beginning cortical layer. (About 80:1). monosiphonous branches reached the number of 13. The first pericen- tral cell in the segment is formed under this small cell, and be- comes therefore shorter than the others, of which one is fertile. A single tetrasporangium is shaped in each segment; they are placed in screw line and the stichidia upon the whole are beauti- fully screw-formed (Fig. 307). The tetrasporangia are tetrahedri- callv divided. .. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readab
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