"Shirobuchi Gibōshi, the "white-dappled hosta" is named buchi meaning "with patches of a different color," but in a wider sense simply "variegated." A cultivar that is small, veins 3-4, with yellowish white margins." This is listed as a mutation of H. sieboldii.

Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term shirobuchi as white edge(d).