Here's a look at the flower, before the flowers have even begun to open.
And here is the end result of the flowers... a Yellow Buckeye fruit. It is differentiated from the fruit of the Ohio Buckeye by its smooth husk (Ohio Buckeyes are much more bumpy)
Blossom end on the left, stem end on the right.
The husk separated easily along one of its seams with a little help from a pocket knife. Let's look at these nuts.
This particular fruit held 3 nuts. The photo on the left shows the portion that contains 2 of the nuts. The photo on the right shows the entire fruit, cut along each seam and showing all 3 nuts.
Cutting the husk open was a little messy. You can see some goop on my knife in this photo - it was pretty sticky, like sap.
I think it's safe to say that these nuts aren't quite ripe or mature yet. They have some of their characteristic dark brown coloring, but that is not fully developed. Also, notice the moisture along the bottom edge of the husk.
unripened Buckeye nuts
If given a few more weeks, this husk probably would have dried out enough to crack open on its own. It would take some force, like that from the blow of a hammer, to actually shatter the nut (something that I've not yet tried). But there are creatures who have other ways for getting inside them. Stay tuned to see more...
HISTORY NOTE: Why is Ohio known as the Buckeye state? Well, the reasons could be various. I found several possible explanations from various ODNR sources:
One document says:
"In 1840, Gen. William Henry Harrison was elected President of the United States. During his campaign, buckeye wood cabins and buckeye walking sticks became emblems of Ohio’s first citizen to win the highest office in the land. This forever set Ohioans apart as “Buckeyes.” While for many years the Ohio buckeye was considered the state tree of Ohio, the designation was unofficial until 1953, when the Ohio Legislature adopted the Ohio buckeye as the official tree."The same document also says:
"Another commonly accepted explanation is that the nickname refers to the large number of buckeye trees native to Ohio. However, all accounts generally agree that the name of the buckeye originated from its close resemblance to the eye of the buck deer."Furthermore, regarding president Harrison's contribution to the nickname:
"As a result of a political remark made by an opposition newspaper, a log cabin decorated with raccoon skins and a string of buckeyes became the symbol of General William Henry Harrison’s presidential campaign," and thus a symbol of the people of Ohio.