. An introduction to vegetable physiology. Plant physiology. EEPEODUCTION 445 other prothallia than their own is not at all difficult. After their liberation they are attracted to the archegonia by- some constituent of the mucilaginous matter which is excreted from their necks when they open (fig. 181). In the Mosses this has been ascertained to be cane-sugar, in. Fig. 180.—Aitthekozoids of Moss (a) and Fern (b). the Ferns it is malic acid or one of its salts. In the Ehodo- phyceaB and such Ascomycetes as exhibit sexual reproduc- tion, the passive male gamete, often called a Sfermatium instead
. An introduction to vegetable physiology. Plant physiology. EEPEODUCTION 445 other prothallia than their own is not at all difficult. After their liberation they are attracted to the archegonia by- some constituent of the mucilaginous matter which is excreted from their necks when they open (fig. 181). In the Mosses this has been ascertained to be cane-sugar, in. Fig. 180.—Aitthekozoids of Moss (a) and Fern (b). the Ferns it is malic acid or one of its salts. In the Ehodo- phyceaB and such Ascomycetes as exhibit sexual reproduc- tion, the passive male gamete, often called a Sfermatium instead of an antherozoid, is floated to the female organ or its trichogyne by currents in the 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 Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill
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