I looked at it and took some more photos for later. Can't see it on the photos, but the stalk is emerging from an apparently dead rosette. That was not one of the three weird ones, but just beside them. I'm wondering if the weird ones came from the same rosette earlier in the year. No way to tell at this point. Took a couple of the larger rosettes for a second planting at another location. They are drying at the moment.