The Atropurpureum is the most likely candidate, a popular cultivar in the nurseries, looks like it to me so I will move them over.
Mid 2004/2005 when I was touring a lot of daylily nurseries in Florida and on tours in St. Louis and Cincinnati, I was taking hundreds of shots a day and I always had a little notebook too and if I got excited about something I was photographing, I would often forget to write it down, so frustrating! Then the media cards increased their memory capacity and I finally had room to take the tag shots.