Funny you'd post this. My paleaceas are getting ready to bloom for the first time that I can remember. What I suspect you've got there is paleacea's next of kin; T. graomogolensis (syn. kurt-horstii). I'll shoot some pics of the various forms of paleacea for you when I get home.

Maybe I can chip in at the same time showing what mine looked like when they flowered two and a half year ago and Gonzer can also say yeah or nay!

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It does look like paleacea Japie, as does Andy's but since I've never had a specimen bloom for me, I can't be certain. In Isley's book he does not show a white center. They both have that little kink in each leaf also. I suspect that they're both paleacea.
Here are the 5 forms I have:

ssp. apuramacensis

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ssp. apuramacensis (large form) ready to bloom on the left

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normal size on left, large form on right

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reported giant form on bottom, won't know till flowering

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I found these photos in Derek's files (thank you Unc). The first shot is of T. graomogolensis, the last two of paleacea. Note the heavy veining in the first shot.

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Hmm, so here is a cropped photo of my flower. To me its veining isn't overly dark. Is that literally a defining difference? And the same flower is still open, which strikes me as kind of odd. I've noticed some tilly flowers being open for a couple of days, but from my memory they seem to obviously not be fresh after the first day.

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