. Botany; an elementary text for schools. Plants. 188 STUDIES IN CRYPTOGAMS visible to the naked eye. However, a section of the disk, such as is drawn in Fig. 334, shows that the pores lead into oblong cavities in the receptacle. From the base of each cavity there arises a thick club-shaped body, the antheridium. Within the antheridium are formed many sperm-cells which are capable of swimming about in. 334. Section through antheridiophore of marchantia, showing antheridia. One antheridium more magnified. water by means of long lashes or cilia attached to them. When the antheridium is mature, i
. Botany; an elementary text for schools. Plants. 188 STUDIES IN CRYPTOGAMS visible to the naked eye. However, a section of the disk, such as is drawn in Fig. 334, shows that the pores lead into oblong cavities in the receptacle. From the base of each cavity there arises a thick club-shaped body, the antheridium. Within the antheridium are formed many sperm-cells which are capable of swimming about in. 334. Section through antheridiophore of marchantia, showing antheridia. One antheridium more magnified. water by means of long lashes or cilia attached to them. When the antheridium is mature, it bursts and allows the ciliated sperm-cells to escape. The archegoniophores are also elevated on stalks (Fig. 332). In- stead of a simple disk, the receptacle consists of nine or more finger- like rays. Along the under side of the rays, between delicately fringed curtains, peculiar flask-like bodies, or archegonia, are situated. The archegonia are not visible to the naked eye. They can be studied only with the microscope (X about 400). One of them much magnified is represented in Fig. 335. Its principal parts are the long vccJc, a, and the rounded venter, b, inclosing a large free cell—the egg-cell. We have seen that the antheridium at maturity discharges its sperm-cells-. 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, Macmillan Co.
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