I did not realize your season is nearly over. Here in holland were are halfway. Anyway I should have realized it earlier but I looked at the latest round of pictures from the shows and found two with black spots on the anthers Meldrum and St Keverne from Tom Stettner, especially in the latter it is quiet clear.
Institute of Molecular Plant Sciences
Clusius laboratory
PBox 9505
2300RA Leiden
The Netherlands