. The principles of botany, as exemplified in the phanerogamia. Botany; Botany; Phanerogams; 1854. 212 COMPOUND OEGANS OF PLANTS. far as just to exhibit its component organs, and remaining imbedded in the nutritive matter of the nucleus which^s unab- sorbed. The embryo of the Marvel of Peru, (Mirabilis,) of the maize, buckwheat, and the whole of the cerealia con- tinues in this rudimentary condition. The albumen, termed by some authors the perisperm, and also the endosperm, when present in the kernel varies in its consistence according to the nature of the deposit and the state of the cells. I
. The principles of botany, as exemplified in the phanerogamia. Botany; Botany; Phanerogams; 1854. 212 COMPOUND OEGANS OF PLANTS. far as just to exhibit its component organs, and remaining imbedded in the nutritive matter of the nucleus which^s unab- sorbed. The embryo of the Marvel of Peru, (Mirabilis,) of the maize, buckwheat, and the whole of the cerealia con- tinues in this rudimentary condition. The albumen, termed by some authors the perisperm, and also the endosperm, when present in the kernel varies in its consistence according to the nature of the deposit and the state of the cells. It consists of a mass of cells without any appear- ance of vessels, which may be thin and dry and contain a great quantity of feoula or starch, as in the corn and the other grasses; or thick and fleshy, containing juices of various kinds, as in the cocoa-nut and Euphorbiaceae; or finally, the cells may be of a horny or ligneous nature, as in the coffee and vege- table ivory, (Phytelephas.) The quantity of albumen in seeds depends on the extent to which 'embryonic development is car- ried. When the embryo is small the albumen is abundant, as in the seed of the monkshood, (Aconitum,) Fig. 105, where e repre- Kg. 106. ^. ^--P! Fig. 106. Vertical section of the nfhenium of the nettle, (Urtica,) showing the em- bryo nearly filling the achenium, r radicle; pi plumule; t testa, or integument. sents the embrj'o. When the embryo is large, as in the nettle, Fig. lOGj the albumen is very scarce. In the Labiatse, 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 Coultas, Harland, d. 1877. Philadelphia : King & Baird
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1854
