AND WHAT THEIR PARTS ARE. 
9 
19. Notice, also, that the calyx and the corolla, one or both, often consist of 
separate leaves ; as they do in the true Lilies. Each separate piece or leaf of a 
corolla is called a Petal: and each leaf or piece of a calyx is called a Sepal . 
20. The corolla, the stamens, and generally the calyx, fall off or wither away 
after blossoming ; while the ovary of the pistil remains, grows larger, and becomes 
21. The Fruit. So that the fruit is the ripened ovary. It may be a berry, a 
stone-fruit, a nut, a grain, or a pod. The fruit of the Lily and also of the Morning- 
Glory is a pod. Here is the pod or fruit of the 
Morning-Glory (Fig. 4, fr. and Fig. 13), with 
the calyx remaining beneath, and' the remains 
of the bottom of the style resting on its summit. 
And Fig. 14 shows the same pod, fully ripe and 
dry, and splitting into three pieces that the 
seeds may fall out. This pod has three cavities 
(called Cells ) in it ; and in each cell two pretty large seeds. Lily-pods have three 
cells, as we may see in the ovary in the flower (Fig. 12), and many seeds in each. 
- 22. Seeds. These are the bodies produced by the ripened pistil, from which new 
plants may spring. Here (Fig. 15) is a seed of 
Morning-Glory, a little enlarged. Also two seeds 
cut through lengthwise in two different directions, 
and viewed with a magnifying-glass, to show what 
is inside (Fig 16, 17). The part of the seed that 
grows is 
23. The Embryo, or Germ. This is a little plantlet 
ready formed in the seed. In the Morning-Glory it 
is pretty large, and may readily be got out whole 
from a fresh seed, or from a dried one after soaking 
it well in hot water. In Fig. 16 it is shown whole 
and flatwise in the seed, where it is a good deal 
crumpled up to save room. In Fig. 17, merely the thickness of the embryo is 
seen, edgewise, in the seed, surrounded by the pulpy matter, which is intended to 
nourish it when it begins to grow. In Fig. 18, the embryo is shown taken out 
whole, and spread out flat. In Fig. 19, its two little leaves are separated, and we 
plainly see what it consists of. It is a pair of tiny leaves on the summit of a little 
stem. The leaves (Fig. 19, c, c) are named Seed-leaves or Cotyledons ; the little 
stem or stemlet is named the Radicle , r. 
