I do not even want to venture a guess at the taxonomy here, but Kathy Allen for many years grew a Raoulia sp. and to me it looks like a mega size version of tenuicaulis, the individual rosettes are bigger and the foliage has a bit more of a grey green, silver shine to it then straight tenuicaulis, but they are very similar. Probably have to see them side by side to tell a difference.

So I’m going to call it a jumbo tenuicaulis.

One should remember that I am not a taxonomist, I respect the skills involved in that sort of work, and I do strive to keep the names as best I can, but ultimately I love to propagate plants and make beautiful garden plantings with them. If you see a name that is incorrect by all means please let me know and I will fix it, it’s because of caring botanically minded taxonomists like you that the correct names can be passed around, only to be changed when the dna is analyzed. double helix matters.