I honestly don't know much about Anacampseros except for my own observations but I remember reading somewhere that they are or can be self-fertile. Since my Anacampseros filamentosa ssp. namaquensis is currently flowering (I missed almost all of the flowers) I was wondering whether any seeds will develop. Some of the faded flowers drop their heads and fall off very soon.
Others stay upright and push the remaining sepals up like a hat with only some hair-like see-through fibers left. If you look closely you can see something is inside that looks like the rests of dried anthers. But in fact those are seeds!
The unusual and pretty unstable seed capsule measures only 6mm but there are over 60 seeds. The seeds are placed loosely inside and fall out at the slightest touch.