Introduction. 13 
And now you see why the flower makes 
nectar. 
It wishes to coax the bees to come. 
When the bees go down to the bottom of 
the flower after nectar, they will be sure to 
get their coats dusty with pollen. Then 
they fly to another flower, and some of the 
pollen on their coats is rubbed against the 
stigma and stuck fast there. 
The nectar is always placed so that the 
bees have to touch the anthers and the 
stigma of the flower on their way to 
the feast. 
Many flowers have bright lines or spots 
leading to the nectar that the bee may lose 
no time in finding it. These are called 
nectar guides, and you can see them very 
plainly in the morning-glory. 
Many other insects besides bees visit 
flowers. Butterflies and moths and flies 
and even some beetles are fond of nectar 
and pollen, and they all carry pollen about 
from plant to plant. 
