Sweet Violet Seeds
Viola odorata

I managed to gather a very few seeds from the little sweet violets growing in my front garden.

As the seed pods mature, they catapult the seeds out at high velocity. In order to harvest them, you have to gather them at the right time before they scatter. I forgot this year, in fact I rarely bother because these things self seed like billy oh. However, if you fancy a couple of seeds, I have some here.