Hello, A few months back I started collecting air samples and trying to identify the "free-flying" pollen. One of the things that I've seen that is quite puzzling for me is this: http://avtanski.net/projects/air_sampler/microscope/full/p0048.jpg I'm thinking this is coming from some of the flowers in our garden, but still haven't figured out where it comes from. Any clues what can it be? Recently I started seeing some other bright yellow pollen, with similar shape like this one, but no pores visible. Sorry, I don't have a pic of this one yet. Am I right in my hunch that it is coming from a flower, not a tree? (Frankly, even I don't know why I think it might be a flower - it just doesn't look tree-ish enough to me.) Regards, - Alex
