There is an image of this cultivar on the Hosta Library. From the photo on the HL website, it appears to be a small size hosta with nearly white leaves that develop some green color later. This will probably be a difficult plant to maintain due to the very thin texture of the leaf. It is a hybrid of H. 'Undulata'. This non-registered cultivar was originated by Kenji Watanabe of Gotemba Nursery in Japan.