Identification of Drosera filiformis

Hi everyone!

I have a few Drosera filiformis var. filiformis in my bog garden. During the vegetative period, they all looked pretty much identical. However, I’ve noticed that one plant in particular never had the classic "fluffy" center that the others have.

This difference is even more evident now that they are dormant. While the others have the typical fuzzy winter bud, this one looks quite different (same for the shoot next to it).

I’m wondering: could this just be a slight natural variation within the same variety, or is it possible that this specimen isn't actually a var. filiformis? What do you think?