Cryptocoryne becketti
Inside the kettle
This picture of beckettii demonstartes the parts of the kettle. Right side being the bottom.
The stamens consist of two pollensacks, each with a small, dark tube out. When the stamens ripens, the end of the tubes dissolves, letting out a drop with pollen.
Pollen droplet can be seen in above photo
Comparing C.walkeri"lutea"with C.wendttii