This time it's one of my fulviceps!
They are the same age as the gracilidelineata that blossomed a few weeks ago. This one might be a few weeks younger, but it germinated in 2007, too.
The flower will be yellow, since all fulviceps (with the exception of one cultivar) have yellow flowers. I thought I saw some changes in the fissure a couple of days ago, but I didn't quite believe it until today when it became kind of obvious. ;)
Lithops fulviceps with emerging flower bud on September 16, 2012