This cultivar was listed on the MyHostas Database website. Discovered on the Izu Peninsula in Japan, this cultivar of unidentified parentage was registered by Kevin Walek (Hosta Registrar) in 2009 and re-registered with new data in 2018.

It is a fast growing, small size hosta about 10 inches high by 30 inches wide with dark green foliage. The white backed leaves are slightly shiny, deeply wavy, moderately folded and have striped red petioles. Dark lavender, bell shape flowers bloom from mid-August through September on scapes about 20 inches tall followed by viable seeds.

The registration material states, "...a white-backed phenotype of H. longipes var. latifolia collected on Izu Peninsula..."

Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term iwa as rock, Iwa Gibōshi or H. longipes and the term urajiro as white-backed or white underside.