Hosta clavata 'Urajiro'
An article by W. George Schmid in The Hosta Journal (1996 Vol. 27 No. 2) states that This is a duplicate, incorrect or outdated name for Hosta clavata 'Urajiro Musashino'. Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term urajiro as white-backed or white underside.
Many hostas in Japan have been given the simple name 'Urajiro' which would indicate that the plant has a whitish color on the bottom of the foliage. There are at least 5 such plants with that name, all from different species including:
