An article by
W.
George Schmid in The
Hosta Journal (1996 Vol. 27 No. 2) states that This is a duplicate, incorrect or outdated name for Hosta
kikutii polyneuron 'Shirofukurin
Sudare'.
Mikiko Lockwood in an article on The Hosta Library titled,
A Little About Japanese Hosta Terms defines the term shirofukurin or shiro fukurin as white-edge(d) or
white-margin(ed).