. A manual of botany. Botany. COMPOSITION OP ALEUEONE GEAINS 451 form. In many seeds they are deposited in the form of grains of complex nature, and sometimes of elahorate structure. Grains of proteid material are known as aleurone grains. Sometimes they are small, rounded and structureless, as in the Pea {fig. 1190). In other seeds, as in the castor-oil plant, they are much larger, of rounded or ovoid form, and contain a crystal of proteid matter, which often occupies nearly their whole substance (fig. 1191). This has been called a crystalloid. There is in such cases also a small aggregation
. A manual of botany. Botany. COMPOSITION OP ALEUEONE GEAINS 451 form. In many seeds they are deposited in the form of grains of complex nature, and sometimes of elahorate structure. Grains of proteid material are known as aleurone grains. Sometimes they are small, rounded and structureless, as in the Pea {fig. 1190). In other seeds, as in the castor-oil plant, they are much larger, of rounded or ovoid form, and contain a crystal of proteid matter, which often occupies nearly their whole substance (fig. 1191). This has been called a crystalloid. There is in such cases also a small aggregation of mineral matter which lies close to the crystal. This is known as a globoid, and consists of a double phosphate of calcium and magnesium. The proteids of the aleurone grain are generally mixtures of Fig. 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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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
