. Botany of the southern states. In two parts. Part I. Structural and physiological botany and vegetable products. Part II. Descriptions of southern plants. Arranged on the natural system. Preceded by a Linnaean and a dichotomous analysis. Plants. 14 CELLULAE TISSUE. but the swollen starch-grains which compose this h ^ vegetable: the*beet, carrot, and turnip owe their value, so far as they are suited for food, to the abundance of this tissue, de- veloped in the cellular integument of the bark of the roots, and just in proportion as the other forms are developed, those vegeta- bles become
. Botany of the southern states. In two parts. Part I. Structural and physiological botany and vegetable products. Part II. Descriptions of southern plants. Arranged on the natural system. Preceded by a Linnaean and a dichotomous analysis. Plants. 14 CELLULAE TISSUE. but the swollen starch-grains which compose this h ^ vegetable: the*beet, carrot, and turnip owe their value, so far as they are suited for food, to the abundance of this tissue, de- veloped in the cellular integument of the bark of the roots, and just in proportion as the other forms are developed, those vegeta- bles become useless. The tough, fibrous form these roots some- times assume in dry seasons, in poor soil, or in an uncultivated stat.\ is owing to the diminished quantity of the cellular tissue proper, and the abundance of the prosenchymous or woody form. Starch, arrowroot, &c, are but forms of the same substance. The various fruits are composed of cells filled with the various juices peculiar to each species. In the lemon we find the vesicles filled with an acid of considerable intensity. The orange and pine- apple gratify our taste by the mild yet delicious flavor of their contents. In the melon we meet with a fluid of a blandness and insipidity almost equalling fountain water. The various coloring materials drawn from the vegetable kingdom, and used in the arts, have their locality in the same tissue. The coloring matter which produces the great variety of hues that elicit our admiration by their brilliancy and variety, is deposited in trans- parent cells. The satin-like appearance exhibited by many highly colored flowers, depends (according to Lindley) on the highly colored fluid within the cell gleaming through the white shining ng. n. membrane of the tissue ; and the peculiar appearance of a petal, by which any one readily distinguishes it from a leaf, is oc- casioned by the irregular arrangement of the cells that form its epidermis, some a petal. being more elevated than others
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