14 FLOWERS 
while the other having pistils only is called a pistillate flower. Such 
flowers are said to be uniserual. Pumpkins, Cucumbers, Corn, 
Hemp, Willows, and Poplars are some of the familiar plants 
which have unisexual flowers. In Figure 6 are shown the uni- 
sexual flowers of the Pumpkin. In some cases, as in Corn, 
Cucumbers, and Pumpkins, both staminate and pistillate flowers 
are borne on the same plant. 
Such plants are said to be mone- 
cious (meaning ‘of one house- 
hold”). In other cases, as in 
Hemp, Willows, and Poplars, 
the staminate and_ pistillate 
flowers are borne on different in- 
dividuals, that is, one plant has 
Fic. 9.—Section through the flower only staminate while another has 
of Cotton. s, stamens joined intoa only pistillate flowers. Such 
ee which ao tas pistil; _ plants are said to be diecious 
istil composed of carpels more unite = ce ” 
than those of the Apple. Smaller ("meaning " of two households’ ). 
than natural size. After Baillon. Hine 
everyone knows, the pistils are 
the organs in which fertilization occurs and seed is produced, while 
the stamens furnish the pollen, which is essential for fertilization. 
Flowers usually have more stamens than pistils, but the number 
Fic. 10.— A flower of a Legume with petals removed to show the dia- 
delphous stamens. u, free stamen; b, tube formed by the joining of the 
other stamens. 
of each varies much in the flowers of different plants. Some 
flowers, as those of the Strawberry, have numerous stamens and 
pistils, while in some flowers, as in the Peach or Plum, there is 
only one pistil, but many stamens. (Fvg. 7.) The Apple flower, 
which has many stamens, really has five pistils, but the lower 
parts of the pistils are joined, leaving only the upper parts free. 
