. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Borgesen: List of species. 447 more or less coherent disc. The cells in the basal filaments are about 5 n broad and 8 u long. From nearly all the cells of these filaments erect ones arise. These are ramified from rather neai the base; the branches are given off in all directions, but very irregularly, often several above each other at the same side. And the distance between the bran- ches, too, is very vari- able; in some cases a row of cells of the main fil- aments carry a branch, in other several bare cells are present between those beari
. Dansk botanisk arkiv. Plants; Plants -- Denmark. F. Borgesen: List of species. 447 more or less coherent disc. The cells in the basal filaments are about 5 n broad and 8 u long. From nearly all the cells of these filaments erect ones arise. These are ramified from rather neai the base; the branches are given off in all directions, but very irregularly, often several above each other at the same side. And the distance between the bran- ches, too, is very vari- able; in some cases a row of cells of the main fil- aments carry a branch, in other several bare cells are present between those bearing branches (Fig. 416 b). The branches are straight and given off at acute angles. The main filaments are at the base about 5 n thick and the cells 12 /i long; upwards they taper slowly to about 2,5;/. The branches are proportionally smal- ler, 3—Aifi at their base, about 2 n at their sum- mit. The sporangia are linear-oblong, 11—12 fx long and about 6 n broad. They occur upon short branchlets at the base of the branches (Fig. 416 b, c). The sporangia are mostly pedicellate, rarely sessile. In the upper end of the main filaments these, too, carry branchlets with sporangia. The chromatophore is an irregularly lobed or perforated, parietal plate, covering most of the cell and including a lateral pyrenoid. The most important differences between this species and Acr. gracile are, that in Acr. gracile the erect filaments are very. Fig. 416. Acrochsetium cæspitiforme nov. spec. a, basal part of the plant, b, upper part of a filament, c, branchlet with sporangia. (a, about 200:1; b, about 260:1; c, about 600:1).. 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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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
