Dusky Challenger is listed as blooming Mid to Late. I did a search for a purple iris that bloomed late, one historic showed up. Then I did a search for both purple and then black late, no results, then went to black ML No results, then I went to black M still no results, and I know for a fact that Before the Storm is listed as black Mid. The only things I entered was Iris, Black Late. Of course when nothing shows up the computer tells you that maybe you have too many options selected.
Guess the search engine is on break.