This cultivar of unidentified parentage is listed as H. rectifolia 'Nakai'. It forms a medium size mound about a foot tall by 26 inches wide. In August, it bears purple flowers.

According to The Hostapedia by Mark Zilis (2009), "A series of mistakes created this "cultivar". When speaking of the species H. rectifolia, "Nakai" simply denotes the person who originally described it as a species and is commonly written as H. rectifolia Nakai (Schmid 1991, p.87). At some point, someone mistakenly altered the name to H. rectifolia 'Nakai' and attributed it to a white edged plant, probably H. rohdeifolia."