This is a specimen of Paddy Pollen. Paddy Pollen is simply pollen that comes from a paddy, a flooded field where semi aquatic plants are grown. Unfortunately, this sample is not further identified, and it is difficult to identify pollen based solely on an image from a light microscope. My guess is that it comes from rice.

This slide was purchased on Ebay and is part of 100 prepared slides " set A" I believe you'll find these images of Paddy Pollen to be superior to those found elsewhere!