. Elementary botany. Botany. FUNGI: SAPROLEGNIA. 127 after this process has taken place. Sometimes the slender antheridium can be seen coiled partly around the oogonium, and one end entering to come in contact with the egg cell. But in some species the antheridium is not present, and that is the case with the species figured at 135. In this case. li. Fig. 142. Gonidiophores and gonidia of potato blight (Phytophthora in- Gonidia of potato festans). b, an older stage showing how the branch enlarges where blight forming zoogo- it grows beyond the older goniduim. (After de Bary.) nidia. \After de
. Elementary botany. Botany. FUNGI: SAPROLEGNIA. 127 after this process has taken place. Sometimes the slender antheridium can be seen coiled partly around the oogonium, and one end entering to come in contact with the egg cell. But in some species the antheridium is not present, and that is the case with the species figured at 135. In this case. li. Fig. 142. Gonidiophores and gonidia of potato blight (Phytophthora in- Gonidia of potato festans). b, an older stage showing how the branch enlarges where blight forming zoogo- it grows beyond the older goniduim. (After de Bary.) nidia. \After de Bary.) the eggs mature without fertilization. This maturity of the egg without fertilization is calledparlh^w^Lin-sis, 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 egg cell. Spermatozoids. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt
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