Pollen-Bearing Chestnut Blossom
The chestnut bears its pollen and its ovules separately. It depends largely on the wind to transfer the pollen, and hence does not develop a conspicuous floral envelope to attract insects. But the massed blossoms, in spite of their small individual size, are conspicuous, as this picture shows. The pollen is produced in relatively enormous quantities.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 3