. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. CHARA. 205 constituent cells, each of which then liberates an anthero- zoid. The antherozoids make their way down the necks of the carpogonia and fertilize the germ-cells. The spiral cells then harden, and form a firm coat for the spore within. As the plant decays in the autumn, these seed- like sporocarps^ as they are now called, drop off and fall to the bottom of the water, where they eventual
. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. CHARA. 205 constituent cells, each of which then liberates an anthero- zoid. The antherozoids make their way down the necks of the carpogonia and fertilize the germ-cells. The spiral cells then harden, and form a firm coat for the spore within. As the plant decays in the autumn, these seed- like sporocarps^ as they are now called, drop off and fall to the bottom of the water, where they eventually ger- minate. On germination, they first produce a simple form to which the name pro-embryo has been given, and from which arises the plant- body which bears the antheridia and carpogonia. There is, therefore, displayed in this case an alternation of genera- tions. 355. Chara belongs to a group of plants known as AlgSB. They grow either in the water or upon damp surfaces. Tliey differ from the Fungi principally in developing chlorophyll, so that they are able to assimilate. In colour, the AlgSB are often green, but in other cases the chlorophyll is obscured by the presence of other colours, such as brown and red. In the lowest forms of both Algse and Fungi reproduction takes place by simple division of the cells. In higher forms the entire contents of two similar adjacent cells coalesce to form a new one, from which the new plant springs. This is the process of conjugation (284). In still higher forms, as in Chara, reproduction takes place by fertilization. Fig. Highly magnified view of part of the fertile thailus of Chara, (Thoni6.) *:i. Pig. 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 Spotton, H. B. (Henry Byron), 1844-1933. Toronto : W. J. Gage
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, booksubjectpl
