2-3 years ago I bought 3 Pleione formosanum 'Lilas' from a webshop here in Norway (Zimtrade). It was described as light pink with skarp yellow trumpet. I can't find any 'Lilas' as spp. or hybrids, and the flowers doesn't match the description either. It is larger than my formosanums, flowers are larger - and higher (12-15cm). Here are some pictures, the first is together with "ordinary" formosanum.
(Clickable pictures)Is it possible to say something about this Pleione?