Thanks for the pictures. Gracilis has similar habit as N. ampullarias. When they vine and become matured plants, they will produce basel pitchers in the same way just like amps. The leaves are very small an narrow with a very short tendril. This is also another reason why I like gracilis. Here's a picture of my gracilis. This is an old plant with me, and as you can see it has produced basel pitchers for me:
It is interesting to note that the pictures you took of the picthers hidden in the media and leaves are red in colour. I realised my gracilis only gives me nice red picthers when it is exposed to direct sunlight. Whenever I place them in a more shaded place the pitchers are greenish. However, I've also noticed that wild plants do have reddish picthers that are not exposed to sunlight.
Anybody has an explaination for this?