. The microscope and its revelations. •^ ^3 a FIG. of protoplasm. (From Vines* Physiology of Plants. Cambridge University Press.) STRUCTURE OF PALMOGLCEA 541 f/onidial1 cells or groups of cells, which simply multiply the parentstock, in the same manner that many flowering plants (such as tin-potato) can be propagated by the artificial separation of their leaf-buds. It frequently happens among cryptogams that this yonidialfructification is by far the more conspicuous, the sexual fructifica-tion being often so obscure that it cannot be detected withoutgreat difficulty ; and we s
. The microscope and its revelations. •^ ^3 a FIG. of protoplasm. (From Vines* Physiology of Plants. Cambridge University Press.) STRUCTURE OF PALMOGLCEA 541 f/onidial1 cells or groups of cells, which simply multiply the parentstock, in the same manner that many flowering plants (such as tin-potato) can be propagated by the artificial separation of their leaf-buds. It frequently happens among cryptogams that this yonidialfructification is by far the more conspicuous, the sexual fructifica-tion being often so obscure that it cannot be detected withoutgreat difficulty ; and we shall presently see that there are somethallophytes in which the production of yon ids seems to go onindefinitely, no form of sexual generation having been detectedin them. These general statements will now be illustrated bysketches of the life-history of some of those humble thallophyteswhich present the phenomena of cell-division, conjugation, and. (ft !» Fiiids, originally applied to certain green cells in the lichen-cruststhat are capable, when detached, of reproducing the vegetable portion of the plant,i> used by some writers as a designation of the >n» spores of cryptogamsgene
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
