. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. C. rupcstris (6, Fig. 21) or the Rock cladophora. It is easily recognised by its very dark or blackish-green colour, and by the excessive rigidity of its filaments, and erect ramuli or branchlets. This species does not readily adhere to paper. Therefore, the best way in preparing it for the herbarium is to mount it on paper in the usual man- ner in sea water, and after it is partially pressed and nearly dry, to immerse it, paper and all, in skimme
. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. C. rupcstris (6, Fig. 21) or the Rock cladophora. It is easily recognised by its very dark or blackish-green colour, and by the excessive rigidity of its filaments, and erect ramuli or branchlets. This species does not readily adhere to paper. Therefore, the best way in preparing it for the herbarium is to mount it on paper in the usual man- ner in sea water, and after it is partially pressed and nearly dry, to immerse it, paper and all, in skimmed milk, and then dry and press it as before, after which it will adhere closely to the paper for an indefinite period. To general observers, many of the Cladophora look won- derfully alike, all of them being more or less bushy and excessively branched, and green of various shades being. Fig. 17. Cladophora rectangularia. Fig. 18. Cladophora falcata. Fig. 19. Vaucheria velutina (ramuli with vesicles). the prevailing colour; but as the tints vary greatly, according to the age of the plants and the situation in which they grow, even in individuals of the same species, colour is by no means a character which can be implicitly relied on. An examination of at least terminal branchlets with a good lens is absolutely neces- sary, and thus they will all be found to be more or less abundantly dif- ferent. I have selected a few species, which are most likely to be met with, in illustration of my remarks, and because I think that my figures of magnified branches will help students to distinguish their charac- teristic ramification or mode of growth, and the peculiarity of branching, as well as the differ- ences in the form and The. 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 Grattann, W. H. London : The "Bazaar
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Keywords: ., bookcentury1800, bookdecade1870, bookpubl, booksubjectmarinealgae
