116 Gardening 
This is the pollen, and under 
the microscope it is seen to 
be made up of very small 
rounded bodies which are 
called pollen grains or micro- 
Spores. The anthers are, 
therefore, sacs that contain 
minute spores. 
The enlarged base of the 
pistil is called the ovary. If 
this is slit open and examined, 
small rounded bodies, much 
Fic. 68. The pistil of a bean smaller than the anthers, will 
Malan gues neticl cia Defoundin it. These are the 
5 times. A portion of the outer ovules. At first each ovule 
wall of the ovary is cut away to . 7 ‘ 
contains a single spore and is 
show the ovules in place. On the 
stigma and on the brush of hairs thus a spore sac like the 
near the stigma are several pollen 
grains, and a black line shows the anther. The spore, however, 
becitltethctatone ig not released but remains 
within the ovule, and from it 
there develops a cell called the egg cell. In some flow- 
ers the ovules are so small that they are hard to see, 
but in the young fruits the ovules which are becoming 
seeds are easily seen with the naked eye. 
Pollination. In nearly all plants the pistils will 
wither and drop off unless pollen from the same kind of 
plant or from closely related plants is placed on the 
end of each pistil; that is, on the stigma. 
In some garden plants like corn, cucumber, and 
squash, the anthers with their pollen and the pistils 
with their ovules are in separate flowers, and the pollen 
