W. George Schmid in his Hosta Species Update on The Hosta Library (2006) calls this a yellow-centered sport of H. montana found in the wilds of Japan. The center is bright yellow in the spring but fades to whitish as the season progresses.

H. kiyosumiensis medio-picta and H. kiyosumiensis ‘Busen’ are incorrect names for this plant but H. 'Busen' may be used.

Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term kinakafu or ki nakifu as yellow-center(ed).