. The elements of structural botany [microform] : with special reference to the study of Canadian plants ; to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. sa 8 ELEMENTS OF STRUC'IURAL BOTANY. Fig. 11. You will notice that the carpel ends, at the top, in a little bent point, and that the convex edge is more or less rough and moist, so that in flowers whose anthers have burst open, a quan- tity of pollen will be found sticking there. This rough upper part of the carpel is called the stiijrnn. Fig. 11 shows a stigma greatly magnified. In many pl
. The elements of structural botany [microform] : with special reference to the study of Canadian plants ; to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. sa 8 ELEMENTS OF STRUC'IURAL BOTANY. Fig. 11. You will notice that the carpel ends, at the top, in a little bent point, and that the convex edge is more or less rough and moist, so that in flowers whose anthers have burst open, a quan- tity of pollen will be found sticking there. This rough upper part of the carpel is called the stiijrnn. Fig. 11 shows a stigma greatly magnified. In many plants the stigma is raised on a stalk above the ovary. Such a stalk is called a style. In the Buttercup the style is so short as to be almost suppressed. When the style is entirely absent the stigma is said to be sessile. The hollow part of the carpel is the ovary. In our plant the pistil is not connected in any way with the calyx, and is consequently said to be free or superior, and, as the carpels are not united together, the x)istil is said to be iqwcarpous. 8. Remove now all the carpels, and there remains nothing but the swollen top of the peduncle. This swollen top is the receptacle of the flower. To it. in the case of the Buttercup, all four parts, calyx, corolla, stamens, and pistil, are attached. When a flower has all four of these parts it is said to be complete. 9. Let us now return to our statement that the struc- ture of stamens and pistils is only a modi- fication of leaf-structure generally. The stamen looks less like a leaf than any other part of the flower. Fig. 12 will, however, serve to show you the plan upon which the botanist considers a stamen to be formed. The anther corresponds to the leaf-blade, and the filament to the petiole. The two cells of the anther correspond to the two Fig. 12 I. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati
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