Elementary botany (1898) Elementary botany . elementarybotany00atki Year: 1898 FUNGI: 127 after this process lias taken place. Sometimes the slender antheridium can be -ecu coiled partly around the oogonium, and one end entering to come in contact with the egg cell. But in some species the antheridium i- not present, and that is the case with the species figured .it 135. In this case Fig. 141. Fig. 142. Gonidiophores and gonidia of potato blight (Phytophthora in- Gonidia of potato festans). />, an older stage showing how the branch enlarges where blight forming zoogo- it g
Elementary botany (1898) Elementary botany . elementarybotany00atki Year: 1898 FUNGI: 127 after this process lias taken place. Sometimes the slender antheridium can be -ecu coiled partly around the oogonium, and one end entering to come in contact with the egg cell. But in some species the antheridium i- not present, and that is the case with the species figured .it 135. In this case Fig. 141. Fig. 142. Gonidiophores and gonidia of potato blight (Phytophthora in- Gonidia of potato festans). />, an older stage showing how the branch enlarges where blight forming zoogo- it grows beyond the older gonidium. (After de Bary.) nidia. vAfter de Bary.) the eggs mature without fertilization. This maturity of the egg without fertilization is ttlledjfartfcnogenesis, which occurs in other plants also, but is a rather rare phenomenon. 284. In fig. 136 is shown the oogonium and an antheridium, and the antheridium is carrying in the male nucleus to the e^g cell. Spermatozoids ypfek.
Size: 2088px × 958px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
