. Dansk botanisk arkiv. Plants; Plants -- Denmark. 224 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. phores are thread-like, shorter or longer, and irregularly sinuated (Fig. 210 B, E, F). I have found plants with tetraspores, antheridia and cysto- carps, which all occur on separate individuals. The tetraspores _^are sessile on the uppermost and inner side of the mother-cells (Fig. 210 B, C), when young they are oval or obovate, when quite developed nearly spheric- al; they are commonly tetra- hedrally divided more seldom cruciately (Fig. 210 C). The cystocarps are com- posed of two oppositely-placed go
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 224 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. phores are thread-like, shorter or longer, and irregularly sinuated (Fig. 210 B, E, F). I have found plants with tetraspores, antheridia and cysto- carps, which all occur on separate individuals. The tetraspores _^are sessile on the uppermost and inner side of the mother-cells (Fig. 210 B, C), when young they are oval or obovate, when quite developed nearly spheric- al; they are commonly tetra- hedrally divided more seldom cruciately (Fig. 210 C). The cystocarps are com- posed of two oppositely-placed gonimoblasts, which, when ripe, consist of the ramified monili- form threads of the uniseriated, nearly spherical carpospores (Figs. 209, 211 A); the latter are about 40—42/i broad. These peculiar seirosporic cysto- carps agree very well, apart from the form and size, with those found in Seirospora Griffithsiana Harv. and which BoRNET was the first (Notes algologiques, I (1876) p. XIV) to explain as cystocarps in contradistinction to the para- spores (seirospores) also occur- ring in this plant. Fig. 211 C shows a procarp. 1 have only succeeded in find- ing remains of the trichogyne, it seems to be very short-lived as Schmitz (1. c, p. 280) also men- tions being the case in Seiro- spora interrupla (Engl. Bot.). Most probably this is the reason why BuFFHAM^) has not detected the trichogynes in plants examined by him. 1) BuFFHAM, T, H., On the reproductive organs, especially the Antheridia, of some of the Floridese. (Journal of the Queckett Microscopical Club, Vol. IV, Ser. II (1891) p. 252).. Fig. 212. Seirospora occidentalis Borgs. Part of a plant with paraspores. (About 125:1).. 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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