. Elementary botany. Botany. Fig. 142. Fertilization in \'aucheria. rnn, male nucleus ; /n, female nucleus. Male nucleus entering the egg and approaching the female nucleus. (After Oltmans. I the mud, and remains here until the following autumn or spring, when it grows directly into a new plant. 305. Fertilization.âFertilization is accomplished by the spermatozoids swimming in at the open end of the Fig. 143- Fertilization of vaucheria. y«. female nucleus; '«'/, male nucleus. The different tigtires show various stages in the fusion of the nuclei. when one of them makes its way dow
. Elementary botany. Botany. Fig. 142. Fertilization in \'aucheria. rnn, male nucleus ; /n, female nucleus. Male nucleus entering the egg and approaching the female nucleus. (After Oltmans. I the mud, and remains here until the following autumn or spring, when it grows directly into a new plant. 305. Fertilization.âFertilization is accomplished by the spermatozoids swimming in at the open end of the Fig. 143- Fertilization of vaucheria. y«. female nucleus; '«'/, male nucleus. The different tigtires show various stages in the fusion of the nuclei. when one of them makes its way down into the egg and fuses with the nucleus of the egg. 396. The twin vaucheria (V. geminata).âAnother species of vaucheria is the twin vaucheria. This is also a common one, and may be used fur â ,tudy instead of the sessile vaucheria if the latter cannot be obtained. The sexual organs are borne at the end of a club-shaped branch. There are usually two oogonia. and one antheridium bet^\"een them which terminates the branch. In a closely related species, instead of the two oogonia there is a whorl of them with the antheridium in the center. 307. Vaucheria compared with spirogyra.âIn vaucheria we have a plant hich is very interesting to compare with spirogyra in several 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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