This is a form of
Hosta longipes found growing near Mt.
Buku in Japan. It is a small size plant with green
streaked foliage with some leaves have a yellow to white
margin. The leaves are ovate to nearly round in shape.
According to The Hosta Journal (2006 Vol. 37 No. 1),
there is also a cultivar named 'Chichibu'...or one or
the other is a misspelling.