Organography of plants, especially of the archegoniatae and spermaphyta . -shaped antheridia in Riccieae and INIarchantieae and of those of Monoclea. This is the more primitive type, inasmuch as a separation of the wall from theinner cells of the antheridium takes place at a late period. Many tiers of cellsarise, the lowermost of which goes to form the stalk (Fig. 4, /, //), and each tierbecomes divided into quadrants and then the separation of the wall from the innercells appears. We do not know what is the significance of the beak-like prolongationwhich is found in the antheridium of Corsini
Organography of plants, especially of the archegoniatae and spermaphyta . -shaped antheridia in Riccieae and INIarchantieae and of those of Monoclea. This is the more primitive type, inasmuch as a separation of the wall from theinner cells of the antheridium takes place at a late period. Many tiers of cellsarise, the lowermost of which goes to form the stalk (Fig. 4, /, //), and each tierbecomes divided into quadrants and then the separation of the wall from the innercells appears. We do not know what is the significance of the beak-like prolongationwhich is found in the antheridium of Corsinia. 2. Construction through growth in every direction as it is seen in the sphericalantheridia of Jungermanniaceae and Anthoceroteae. Sphaerocarpus may be first mentioned as it shows a transition from the first tothe second type (Fig. 5, i, 2). The mother-cell of the antheridium which has becomeclub-like in form is divided by three cross-walls (i, 2, 3 in Fig. 5, i, 2); the lowermostcell forms the stalk, the next lowest forms the under portion of the wall, the upper two.
Size: 2238px × 1117px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookido, booksubjectplantanatomy
