Grows on Stuff

Hibiscus Pollen This is a pollen grain from a Hawaiian hibiscus. Pollen grains are the male reproductive cells of flowering plants.Pollen grains are microscopic in size, ranging in diameter from less than 0.01mm (about 0.0000004 in) to a little over 0.5 mm (about 0.00002 in). The outer covering of pollen grains, called the pollen wall, is often sculpted in different shapes. Often botanists can tell what kind of plant the pollen came from by the shape. All the pollen grains I have looked at from the hibiscus family look basically like this. There is some other kind of pollen grain in the lower left corner of this image. You can see it is smaller and has a different outer decoration.

 

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