The Hostapedia by
Mark Zilis (2009) says, that this species is "...native to Mt. Ibuki in
green-leaved form of Hosta sieboldii;
listed by Schmid
as the Ibuki Gibōshi and closely related to
forma spathulata... small size mound of green foliage with purple flowers
from mid to late July in the wild..."
The flowers of the species have
yellow anthers and it has wide, winged petioles on the leaves.