92 Principles of Plant Culture. 
cell, which if fertile (153), contains living protoplasm. The 
pollen is set free at maturity. 
145. The Pistil (pis’-til). The column-like part in the 
center of the flower is called the pistil. This also consists 
of three principal parts, viz., the enlarged flattened summit, 
called the stigma (stig’-ma); the egg-shaped base called the 
ovary (o’-va-ry); and the slender part connecting the two, 
the style. The ovary contains a smaller, egg-shaped part 
calied the ovule (o’-vule), which when developed becomes 
the seed. Many flowers have more than one pistil. 
Recapitulating, the parts of the flower are, in the order 
we have considered them: 
a—The calyx ; when divided, the parts are called sepals. 
b—The corolla ; when divided, the parts are called petals. 
c—The stamens; the parts are the filament, anther and 
pollen. 
d—tThe pistil or pistils ; the parts are the stigma, ovary 
and style. 
The ovary contains the ovule or ovules. 
146. The Parts of the Flower Vary in Form in dif- 
ferent species. In the pea flower, (Fig. 44), the five petals, 
shown separately 
in Fig. 45, are not 
only quite unlike 
the petals of the 
cherry flower, 
but as appears, 
they are unlike 
Fig. 44. Flower of the pea, Pisum sativum. (After each other. The 
Baillon). aes Ne 
Fig. 45. The same dissected, showing variation in stamens (Fig. 46 
form of the petals. (After Figuier). st.), and the pis- 
