he other parts of the
flower until blossoming time.

The corolla will be found carefully folded within the calyx and also
helps protect the stamens and pistil.

Some flowers do not produce bright-colored corollas to attract the
bees, for examples, the flowers of the grasses, wheat, corn, and other
grains, the willows, butternuts, elms, pines and others. But they
produce large amounts of pollen which is carried by the wind to the
pistils.

You have sometimes noticed in the spring that after a rain the pools
of water are surrounded by a ring of yellow powder and you have
perhaps thought it was sulphur. It was not sulphur but was composed of
millions of pollen grains from flowers. One spring Sunday I laid my
hat on the seat in church. When I picked it up at the end of the
service I found considerable dust on it. I brushed the dust off, but
on reaching home I found some remaining and noticed that is was
yellow, so I examined it with a magnifying glass and found that it was
nearly all pollen grains. Then I rubbed my finger across a shelf in my
room and found it slightly dusty; the magnifying glass showed me that
this dust was half pollen. This shows what a great amount of pollen is
produced and discharged into the air, and it shows that very few
pistils could escape even if they were under cover of a building.

To make sure of cross pollination nature has in some cases placed the
stamens and pistils in different flowers on the same plant. This will
be found true of the flowers of the squashes, melons and cucumber.
Below some of the flower buds will be seen a little squash, melon or
cucumber (Fig. 75). These are the ovaries of pistils and the stigmas
will be found within the bud or will be seen when the bud opens. But
no stamen will be found here. Other flowers on these plants will be
found to possess only stamens. These staminate flowers produce pollen
and then die. They do not produce any fruit, but their pollen is
necessary for the little cucumbers, squashes and melons to develop.

Another example is the corn plant. Here the pistils are on the ear,
the corn silk being the styles and stigmas, while the pollen is
produced in the tassel at the top of the plant.

With some plants we find that not only are the pistils and stamens in
separate flowers but the staminate and pistilate flowers are placed on
different plants. This will be found true of the osage orange and the
willow.

In many flowers that have both stamens