This truly was a mystery seed for me, at least at first.
It was stuck to a petunia plant, but it has nothing to do with the petunia. Obviously it blew in using that parachute.
Do you recognize what plant this seed is from? If you choose to, please leave a comment with your ideas.
Mystery Seed answers and new Mystery Seeds are posted on Tuesdays.
Edit:Â The answer is now posted.