That's 100% correct. Right now, the male cones of Finnish pines are releasing their yellow dust into the atmosphere--a natural part of their reproductive cycle. Every tree produces millions of grains because they rely on wind to deliver the pollen to the female cones. It is a very inefficient to have sex, but a great way to make "pollen coronas."
Coronas are rings of light that surround the sun or Moon when their light is scattered from small particles. Pollen grains are excellent scatterers while they are suspended in mid-air.
Pine pollen coronas are elliptical and lumpy because the underlying grains are, too. This photo of pine pollen seen through a microscope shows what's going on:
Pollen halos around the sun are lumpy, too. Here are some recent examples: from Mikko Peussa of Nousiainen, Finland; from Andreas Steinbach of Rödeby, Karlskrona, Sweden.
https://spaceweather.com/

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