. Botany of the living plant. Botany. Fig. i86. Vertical section of flower of the Peach, as an example of a perigynous flower. (After Figuier.) and petals. In the Caper Family the carpels alone are raised thus on an elongated axis. More frequently there may be a local widening out of the receptacle, in the form of a ring or cup, by growth of tissue beneath the insertion of the lower parts The sepals, petals, and sta- mens may together be carried out- wards upon its margin, while the gynoecium occupies the centre of the cup. This occurs frequently in certain families, and is well seen in the Ro
. Botany of the living plant. Botany. Fig. i86. Vertical section of flower of the Peach, as an example of a perigynous flower. (After Figuier.) and petals. In the Caper Family the carpels alone are raised thus on an elongated axis. More frequently there may be a local widening out of the receptacle, in the form of a ring or cup, by growth of tissue beneath the insertion of the lower parts The sepals, petals, and sta- mens may together be carried out- wards upon its margin, while the gynoecium occupies the centre of the cup. This occurs frequently in certain families, and is well seen in the Rosaceae (Fig. i86. Peach). Occasionally an isolated genus shows it, as in Subularia, among the hy- pogynous Cruciferae. It may be regarded as a local modification of the hypogynous state, and is described as perigynous. A more important modification is that which leads to the sinking of the gynoecium downwards into the tissue of the abbreviated axis. This gives the epigynous condition, with so-called inferior ovary (Fig. 187, Fuchsia). The way in which this comes about is best illustrated by observing the development of a flower of an epigynous type, as may be easily done in the Sunflower or others of the Compositae (Fig. 188). If median sections be cut of a young head of Sun- flower, the general receptacle will be seen to bear flowers of different ages, the oldest at the outside and the youngest nearest the centre. Each arises in the axil of a bract, and the youngest may have the form of a simple convex papilla (i.). But as the growth at the centre is slower than at the periphery, the flower becomes first flattened and then hollowed. Five rounded bosses appear on the margin of cup, which are the five petals (ii.). The hollow surrounded by them deepens, and five other bosses appear internally to, and alternating with them. These are the stamens (iii.). By their formation the hollow is narrowed, and presently from its shoulders two other upgrowths are formed. These are the carpel
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