This is so weird. That looks very much like an order I received a few days ago from La_daylily.
My guess is that it's pretty warm where those plants were dug, they probably weren't watered that well, and that they sat for a while before being boxed up, dry.
This can happen when the "fans" aren't fully established, in other words, they're just coming up to size. Aggressively dividing and fertilizing for increase will do this, and trimming too much root when digging doesn't help.
If you're going to keep them, I'd give them an overnight soak in a weak liquid fertilizer, then plant.
