. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. Kg. 901. Fig. Fig. 903. or sporocarps (xaj's-o's, fruit). These are sometimes congregated to- gether in receptacles of different sorts (figs. 899 c c, 900). The spores occasionally divide into 3 or 4 cells, constituting tetraspores {riTgag, four), (fig. 482, p. 273). In addition to spores or sporocarps (fig. 902 sp), there are antheridia, consisting of minute cells, with spermatozoids in their interior. In some of the simplest Algae, the whole plant is concerned
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. Kg. 901. Fig. Fig. 903. or sporocarps (xaj's-o's, fruit). These are sometimes congregated to- gether in receptacles of different sorts (figs. 899 c c, 900). The spores occasionally divide into 3 or 4 cells, constituting tetraspores {riTgag, four), (fig. 482, p. 273). In addition to spores or sporocarps (fig. 902 sp), there are antheridia, consisting of minute cells, with spermatozoids in their interior. In some of the simplest Algae, the whole plant is concerned in producing new individuals by division of Figs. 899-903. Frond and organs of reproduction of Fucus serratus, to illustrate the natural order Algffi. Fig. 899. The entire plant much diminished in size. /, Frond com- posed of cells, so united as to form a flat expansion, c c, Conceptacles at the extremities of the frond, containing the organs of reproduction. Fig. 900. Extremity of the frond covered with conceptacles. Fig. 901. Vertical section of a conceptaole, c, with its inner surface covered with spores (sporocarps), paraphyses, and antheridia. t. The superficial ceUular tissue of the frond, in which the conceptacle is buried, o. Foramen by which the conceptaole opens externally. Fig, 902. Spore, sp, covered with its perispore or sporo- carp, p. /, Filaments or paraphyses, by some called antheridia. Fig. 903. Spore, s, sepa- rated and deprived of its perispore or outer 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 Balfour, John Hutton, 1808-1884. Edinburgh : A. and C. Black
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