General terms:
* Sperm: While not entirely accurate, this term can be used in a general sense to refer to the reproductive cells of plants.
* Dust: This term can be used figuratively to describe pollen, especially when it's in the air.
* Spores: This term is used for reproductive cells of some plants, but not flowering plants.
Specific terms:
* Anther dust: This term specifically refers to the pollen produced by the anther of a flower.
* Flower dust: This is a more general term for pollen that emphasizes its origin.
* Plant sperm: This term emphasizes the function of pollen as a reproductive cell.
Figurative language:
* Golden shower: This is a poetic term for pollen, especially when it's falling from trees in large quantities.
* Yellow rain: This term is used to describe the phenomenon of pollen falling from trees, often creating a yellow layer on the ground.
The best word to use will depend on the specific context of your writing.