100x objective, oblique bright field, ~20 photos in the focus stack:
![Image](https://c1.staticflickr.com/3/2864/33867690715_e6e58073dc_b.jpg)
Post-processing attempt to make it look like SEM (could have worked better with non-oblique bright field, because of the shadows):
![Image](https://c1.staticflickr.com/3/2818/33713235302_1cdd02b4b9_b.jpg)
I decided that it's a willow pollen for some reason, but I'm not sure what kind of willow and even if it's really a willow.
Here is the tree I took the pollen from (western Washington state, near a small river), and I'll appreciate any tree identification help if it's possible from these images:
![Image](https://c1.staticflickr.com/3/2860/33090766583_d5c7f65bf3_b.jpg)