As you know my julii bloomed richly again this later summer/fall. But this year I did not pollinate them, not among themselves or with other Lithops as I had done the year before.
Still three or four of them have grown seed capsules and I am pretty sure that no one else has pollinated them. Since they are on my windowsill all year, it is highly unlikely that "external" pollinators came by. Not impossible of course. A few flies, bees or wasps always find their way in, but I was really surprised to find this:
Lithops julii seed capsule on January 2, 2011
This seed capsule looks different from the others I found last summer. This one is green. Maybe the others were just dried out... And maybe the dried out state is the "ripe" state for such a seed capsule. This one can't really be done yet, it's not even three months old.
I will observe this for a while. Maybe I'll be able to give even better advice to people who find seed capsules on their Lithops and don't know when the seeds inside will be fully matured.
At that I just remembered that I still haven't sowed the seeds I harvested from the Lithops julii I pollinated with a marmorata last fall...
Hmm... another experiment for the coming spring! :D