At first I thought there was bubble wrap on the sidewalk! I stepped on something that went pop! pop! pop! under my feet. But on closer inspection, this is what I found:
I had seen the larger, mature version of these in dried arrangements. And, I have heard these called Japanese Lantern Trees. But, when I google that, a lot of different types of tree appear, including this one. So, if you know any more about this type of tree, please let me know!
I have prepared this post so as to participate in Nature Notes over at RamblingWoods.com. Nature Notes is a lot of fun - we get together weekly to show and tell what nature is up to in our parts of the world!