Hosta 'Setouchi Pycnophylla'
There is an image of this cultivar on the Hosta Library. According to The Hostapedia by Mark Zilis (2009), "H. 'Setouchi' = H. pycnophylla...not a cultivar but a Japanese common name for H. pycnophylla, i.e. Setouchi Gibōshi."