Page:Frost (1827) Some account of the science of botany.pdf/19

Rh I shall now proceed to point out, in a general way, the different parts of a plant, and the names by which they are designated. A germinating seed consists of a descending part called the, and the ascending or plumula: this caudex ascendens then acquires leaves, which are connected to the stem by means of leaf-stalks or petioles. We now, as a matter of course, arrive at the flower, which is divided into the calyx or flower-cup; corolla or blossom, stamens, pistil and nectary. The stamen is divided into two parts, the filament, and the anther. The pistillum is divided into three parts, stigma, style, and germen, which, subsequently, becomes the fruit. In considering trees, we have also to consider the trunk, which consists of the Epidermis, or outer skin;

Cortex, or bark;

Liber, or inner bark;

Alburnum, or softwood;

Lignum, or true wood;

Medulla, or pith; the history and constituent parts of which will occupy our intention in the next Lecture.

It now only remains For me to thank you for the kind and indulgent attention which you have been pleased to pay to these observations, and to assure you, that I shall have the greatest pleasure in affording you such information as the brevity of this Course precludes my detailing, and which the short time allotted for these Lectures will not admit of.