Originated in Japan, this non-registered cultivar is a sport of
H.sieboldii. It is a small size hosta with green
foliage that has a white marginal variegation.
Mikiko Lockwood in an article on The Hosta Library titled,
A Little About Japanese Hosta Terms defines the term koba as small leaf,
'Koba Giboshi' or
H. sieboldii and the term shirofukurin or shiro fukurin as white-edge(d) or