What piece has one prong on one end and four on the other? Yesterday I wanted to answer a question with this part in mind, but I couldn't find it in any of the databases I looked in. After finding this part in my collection, I tried to look for its part number to properly reference it, but to no avail. What's more, there was no LEGO marking to be seen either. So now I'm really interested: is this even a real LEGO part?

The material, finish, precision seem all correct, and it fits in the LEGO system in various ways, which is atypical for clone brands.
It is called Plant, Tree Palm Top. It used to be green or brown and was a part of the palm trees found in the Pirate kits. It was the part that the leaves joined onto. The four prongs pointed up.