Melissa, thanks for your reply.
Pretty much as I expected. When I first saw the pods developing and researched, I was pumped, having read that A. obesum was not self-fertile (understood as self-incompatible). Which would mean these two would have been crossed:
The more I read and the more I thought about it, the more I suspected there was just an oft-repeated misuse of the phrase "not self-fertile", when what was really meant was "unlikely to set seed without manual intervention". I'm disappointed, but maybe one day I will find the time/motivation to create the cross myself. My problem is I have about 500 projects on my list with time for maybe 50. Life of a part-time gardener!
Here is a photo of the double pod, lightly wrapped with wire to prevent loss of seed if they opened before I expected:
And a pic of some of the seedlings. Sorry for the poor quality of the photo, best my phone would take under the lighting conditions.
There's a green one at the top, with an "albino" to the right of it. Below them is a seedling struggling to shed it's hull, and finally at the bottom a seedling with it's arms in the air singing "Let it go, let it go..."
Interestingly, neither obesum is variegated, but of 16 seedlings that have sprouted, 4 are albino. What's up with that?
Ron