I would recommend temperate culture with a slight dormant period in winter: slightly drier and with cool to cold nights. Easier mounted than in a pot......
Annother member of the villosum -gratrixianum group. Scape has no long hairs and leaves are more errect and narrower than "classic" villosum. I have heard of a variety fusco-roseum, but it does not seem to be officially named ...
Nice selection!
Is is possible to see the leaves of you gratrixianum var. gratrixianum?
According to the type sheet, they should at least be 4 cm broad....