>>49553779
Rubber is a substance created from latex, which is produced by 10% of all flowers and in some mushrooms. In the instance of bellflowers, latex can be formed through the leaves or stem as I previously explained. I specifically used bellflowers as an example because I like the shape of them.
>>49553797
Not unless you have an allergy, but I still would not recommend eating it. There's no nutritional value.