Plants and their ways in South Africa . Fig. 195.—Vaucheria. A, B, formation of antheridia and oogonia ; /z, malebranch ; a, antheridium ; og, oogonium ; C, oogonium opening to exude thedrop of mucilage, si; D, spermatozoids ; E, spermatozoids entermg oogonium ;F, a, an empty antheridium ; osp, oogonium with oospore or fertilized oosphere(magnified). (After Goebel and Pringshein.) as having no root, stem or leaves, and in having one-celled fruitingorgans. It may be divided into three subdivisions. A. Alg/f:.—Most of the plants composing the green floatingscum on ponds, which is sometimes calle
Plants and their ways in South Africa . Fig. 195.—Vaucheria. A, B, formation of antheridia and oogonia ; /z, malebranch ; a, antheridium ; og, oogonium ; C, oogonium opening to exude thedrop of mucilage, si; D, spermatozoids ; E, spermatozoids entermg oogonium ;F, a, an empty antheridium ; osp, oogonium with oospore or fertilized oosphere(magnified). (After Goebel and Pringshein.) as having no root, stem or leaves, and in having one-celled fruitingorgans. It may be divided into three subdivisions. A. Alg/f:.—Most of the plants composing the green floatingscum on ponds, which is sometimes called frog spittle, are are found on damp walls, on stones, or moist earth. Allthe seaweeds are algae. These plants may be but single cells,long threads or filaments of cells, or masses of cells. The fila-ments may break apart, and so form new plants, or the cell 2 22 Plants and their Ways in South Africa contents may round off and form spores. The spores ofpond scums are preserved in the dried mud during the drymonths, an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1915
