. A handbook of cryptogamic botany. Cryptogams. iS8 MUSCINE^ on their under side ; these male and female inflorescences, as they are termed, may be either monoecious or dioecious. In the foHose orders there is a great variety in their locality and mode of origin. The antherid originates as a papilliform swelling of a super- ficial cell, from which it is marked off by a septum. 'When mature it is seated on a pedicel or stalk, and consists of an external layer of cells containing chlorophyll, which enclpses the mother-cells of the antherozoids. The antherid dehisces by longitudinal fissures into
. A handbook of cryptogamic botany. Cryptogams. iS8 MUSCINE^ on their under side ; these male and female inflorescences, as they are termed, may be either monoecious or dioecious. In the foHose orders there is a great variety in their locality and mode of origin. The antherid originates as a papilliform swelling of a super- ficial cell, from which it is marked off by a septum. 'When mature it is seated on a pedicel or stalk, and consists of an external layer of cells containing chlorophyll, which enclpses the mother-cells of the antherozoids. The antherid dehisces by longitudinal fissures into valves, and the mother-cells themselves escape into the sur- rounding moisture, into which each discharges an antherozoid. The antherozoids are slender threads of protoplasm, with from one to three spiral coils, and are provided at the anterior end with two long and very slender cilia, by means of which they ' swarm ' in the water with a rotating motion. The archegone also first makes its appearance as a papillose out- growth of a superficial cell, which then becomes separated in the same manner. After this mother- cell has divided several times longitudinally, the central one of. Fig. 133.—Gotischea appendicitlata N. ab E. (magnified). the cells thus formed divides transversely into an upper stigmatic or lid-cell and a lower cell. Two layers are subsequently formed, the upper of which becomes the neck of the archegone, the lower its ventral. 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 Bennett, Alfred W. (Alfred William), 1833-1902; Murray, George Robert Milne, 1858-. London, New York, Longmans, Green, and Co.
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondonnewyorklongm
