There is an image of this
cultivar on the
Hosta Library. From the photo on the HL website, it appears to be a
size hosta with blue-green leaves and greenish-yellow medial
(center) variegation on some, but not all, of the
leaves.. This non-registered cultivar was
Dr. Ralph (Herb) Benedict of Michigan.
The Hostapedia by
Mark Zilis (2009), "...has
the appearance of being a
variegation. It could also be mistaken for a
less-than-mature 'Tokudama Aureonebulosa."