I researched about floral diagrams and this is what I found:-
This is floral diagram of ***Theobroma cacao***. I managed to identify others but this part near the **stamens** was not found anywhere.
Also the floral diagram includes some **circular parts** which I have highlighted. 

So what exactly are these parts called?[![***this is the floral diagram***][1]][1]


  [1]: https://i.sstatic.net/VEDBv.jpg