When the pod & stem dries, it is ready & drops the seed all over,
or with some coaxing & crushing of the tiny pod, seed will fall into your hand like dust.
How long does it take for the fruit to mature after polination? Is the fruit dehiscent or indehiscent?
I suggest letting the surprises of nature & the wonders of experience with the plants,
show you all you could ever want to know! Indeed experience is the best teacher, and a lot more interesting than having everything spelled out for you.
I personally have been too busy with more interesting things & working with my other plants, than taking the time to track exactly how long it takes for a pod to mature. I don't try to rush the process & always wait until the pod dries completly before trying to extract seed, lest it be detached before being fully ripe & viable.
Perhaps others who also were that concerned about the exact time it takes for the seed to mature, can answer your question. From what I know however, I would assume it is likely variable based on environmental conditions, but again, I never cared enough to do a full experiment covering different environmental variables, as well as testing numerous plants to see if there is one set amount of time or if it does indeed vary.
Again, others are likely more well versed in this than I am. (Unless like me, they really don't find a need or desire to know.)
Personally, with all the other wonderful aspects of growing Cp's, I have never even thought to look into these things while growing them, nor have I ever bothered to find out. I simply waited until a flower's pods matured...often not even noticing until long after they did! (I don't know what difference it makes anyway!
Also, as far as the pods being the fruit being dehiscent or indehiscent?... I would assume it is indehiscent as I haven't seen any seed exposed. The pods just seem to release/drop seed when it is all dried out. But then again I can barely see the pods as it is, and the seed are like dust, and each one smaller than this ---> . <----- period.
Again, I don't know what difference it makes & never cared to bother with whether it was one or the other. My concerns have always been more with getting the plant to grow, mature & produce viable offspring.
Perhaps you can take some real nice close-up pictures of the dried pods so everyone who is interested can see.
As for myself, I don't much care anyway, but always like seeing nice pictures.
I doubt my answers here helped you much, but then I don't really understand the motivation for asking in the first place, as these are questions I never even wondered or were concerned about.
(It would be like wondering exactly how many tentacles each sundew leaf has, and if it was always the same or if it varied. While that may be important to someone studying the various aspects of a particular plant species, it is not something any grower is usually concerned about, as things like how to grow them into healthy & thriving plants or reproduce them, etc. is logically of more concern & interest.
Again, perhaps there are others out there who are more aware of such things than I am, or indeed possibly as interested in these aspects as you are.
Perhaps you could tell me why you were interested in these aspects in the first place, as I am curious now! Perhaps after a lifetime of raising CP's, I am missing some really interesting aspect of growing them!