Caespitosa is indeed much closer, but still not it. Caespitosa's petals are distinctly cleft, while mine are indistinctly fringed or entire-margined. Caespitosa's leaves look to be gray-green and sturdy, forming a robust clump, while mine are mid-green and floppy, forming a much looser plant. In fact, I'd like to grow caespitosa sometime
