Goes dormant when it's too hot, I think. Probably dormant.
I believe we're talking about winter dormancy here.
IDK, they're both temperate species I think. I'd "fridge" it.
i think drosera xTokaiensis is different from the actual Drosera tokaiensis....the tokaiensis i grew never tried to go dormant at any time...it is native to Japan, and at one point was considered a ssp of spatulata, and it does look very very similar, even the flowers do....
There is no difference between D. x tokaiensis and D. tokaiensis. The 'x' just denotes that it is a natural hybrid in accordance to horticultural nomenclature. It was given a latin name because it was originally thought to be a species or subspecies.
By the way Ivan Snyder has a man-made D. tokaiensis which should be white-flowered. There are no natural white-flowered D. tokaiensis.