Describing Kim Beauharnais’ album, Van Veen (the narrator and main character in VN’s novel Ada, 1969) mentions the Knabenkräuter and other pendants of Ada’s lovers:
Nonchalantly, Van went back to the willows and said:
‘Every shot in the book has been snapped in 1884, except this one. I never rowed you down Ladore River in early spring. Nice to note you have not lost your wonderful ability to blush.’