Maybe Allium cyathophorum var. farreri. Just a guess. If you grew it from seed, it is a common imposter, masquerading under several different species names in the seed exchanges.
That looks like a match! Thanks for helping me out. Yes, I did grow that from exhcnage seed. I also have this other plant I'm not sure about. I think it's a Silene, but not certain. Do you know what it is?
Yes, it looks like a silene to me, too. Sorry, no idea which it is, though.
possibly S. alpestrus
Yes, that looks right. Thanks so much, Harold!