A friend in Palo Alto had a big, heavily fruiting P. edulis f. edulis (self-fertile, small-fruited, dark purple passionfruit). It survived the cold without significant damage in December of 2013, only to be killed by raccoons last year that dug the plant up, presumably in search of worms.
My friend gave me a bunch of fruits last year (I forget the month) after the raccoons did their thing. I ate a couple and the rest have sat around in my kitchen since then. They completely dried out and got a bit moldy as well. Passionfruit seeds should be sown relatively fresh, however drying them inside the fruit is probably as good a way of preserving the viability as any.
For those who aren't familiar, here's P. edulis f. edulis in bloom. This is actually the Nancy Garrsison clone, a different clone than the one my friend grew:
The desiccated fruits, before I cleaned them out yesterday:
I split the contents (which are dried and full of dead mold, etc) into 11 roughly equal piles:
I cleaned one of the 11 piles, in the upper right, and counted 65 seeds:
So I don't know how many seeds are in each of the 10 remaining piles.
I also don't know what fraction of seeds are viable (if any).
If anyone is interested in any of the uncleaned seeds, I can send one of the 10 piles for:
A) $3, probably Paypal, or send cash: close to the price of a bubble envelope plus First Class shipping
B) Send a stamped, self-addressed bubble envelope (SASBE)
Again, the seeds would be sent with all the extra "stuff" (dried and possibly moldy arils) as shown above.
I'll soak the cleaned seeds, plant them, and follow up, if anyone wants to wait to see if they are viable. I expect germination (hopefully) in about a month or two.
P. edulis normally takes about 2-3 years from seed to bloom, I think.