White lemnalia? ID

[dendro982]

This coral was sold under two different names: White Lemnalia and Scleronephtya. Hard, spiky, white with light brown polyps. Sclerites are visible. Seems to be low light, not nocturnal. Very different from purple lemnalia, which is soft, not spiky and prefers good light. Last days it started to shed "needles", something is wrong.
Can you identify it and give some info on care? Thanks.
My webshots page

 

[dannyfromholland]

It could be lemnalia or stereonephtya check this tread:

http://www.reefcentral.com/forums/showthread.php?s=&threadid=524097


Its not scleronephthya.

 

[dendro982]

Checked - no photos of lemnalia or stereonephtya, or I missed them? I had seen stereonephtya at the Google image search, looks quite different. If it's lemnalia, why so different from other lemnalias, any details, please?