Hi Rita,
I just want to confirm that this indeed should be D. platystigma. Your plants are a little more advanced than mine. The little black things you see in pictures 1 and 2 are ripe seeds falling out of the seed pods. Mine are not ripe yet, but otherwise the inflorescence looks the same.
However, what you are seeing there, is not the flowers but the remains of them (hence the ripe seeds). I noticed that two of my four D. platystigma forms seem to be self-pollinating (A and C) as yours seems to be.
Here is a picture I made for you today:
The 'C'-form looks similar, allthough it is a bit more greenish.
And this is what the flowers looked like:
A plant in flower (one of those not self-pollinating clones):
I hope this helps to sort things out.
Best regards
Dieter
P.S. In case you want more confirmation to be sure: the arrangement of the gemmae is very typical in D. platystigma (and D. mannii) which makes it easy to tell these apart from any other species.
Plant with some first gemmae
Edited by Dieter, 07 May 2012 - 18:53 PM.