you are so right, I even wrote this on my website "Gute Frage, ich weiss es auch nicht. Deshalb heissen diese vier Blümchen Don´t kNow What Flower"
But please don´t ask mw why I did that back then. My guess would be that I typed the article with Don´t Now What, then when proof reading noticed the spelling error but wanted to keep the "joke"
Anyways, its a mysterious plant with a mysterious history ;-)
But now back to topic - nice renderings!