. Introduction to structural and systematic botany, and vegetable physiology. Botany. 508 ILLUSTRATIONS OF THE NATURAL ORDERS. magnified at Fig. 1333, produce four small cells at their free sum- mit, apparently by gemmation and constriction : these are the spores. It is maintained that the larger intermingled cells, (of which one is shown at Fig. 1332, a,) filled with an attenuated form of matter, are the analogues of antheridia. The lowest Fungi produce from their mycelium only simple or branching series of cells (Fig. 92-94). The mycelium itself either ramifies through decaying organized mat
. Introduction to structural and systematic botany, and vegetable physiology. Botany. 508 ILLUSTRATIONS OF THE NATURAL ORDERS. magnified at Fig. 1333, produce four small cells at their free sum- mit, apparently by gemmation and constriction : these are the spores. It is maintained that the larger intermingled cells, (of which one is shown at Fig. 1332, a,) filled with an attenuated form of matter, are the analogues of antheridia. The lowest Fungi produce from their mycelium only simple or branching series of cells (Fig. 92-94). The mycelium itself either ramifies through decaying organized matter, as the Moulds, &c.; or else — like the Blight and Rust in grain, and the Muscardine so destructive to silkworms, and others. so destructive to the Grape, the Potato, &c. — it attacks and spreads throughout living tissues, often producing great havoc before its fructification is revealed at the surface. Sometimes the last cells of the stalks swell into a .vesicle, in which the minute sporules are formed ; as in Fig. 92. Sometimes the branching stalks bear single sporules, like a bunch of grapes (Fig. 94), or long series of cells, or PIG. 1328. Sphaeria rosella. 1329. Asci from its interior, containing-sporules, highly mag- nified. 1330. Agaricus campestris, the Edible mushroom, in its various stages. 1331. Section' through the pileus, to display the gills. 1332. A small piece of a slice through the thick- ness of onu of the gills, magnified ; showing the spores borne on the summit of salient cells of both surfaces. 1333. One of the sporule-beaiing cells, with some subjacent tissue, more 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 Gray, Asa, 1810-1888. New York [etc. ] Ivison, Blakeman, Taylor & Co.
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1850, booksubjectbotany
