This non-registered form of the species,
H. rupifraga comes from its native
Japan. It is
a small to medium size plant that grows to about 14 inches in height
and a width of 47 inches. The leaves are ovate, wavy with smooth
texture and thick substance. It has petioles with purple dots.
The medium to dark purple flowers are borne in September.
The Hostapedia by Mark Zilis (2009), "This may be the same as
Schmid's 'Urajiro Hachijo'. My
only reservation is that the origins of the two seem to differ.
This Japanese plant comes out of the commonly grown form of Hosta rupifraga, though that species has often been confused
var latifolia. "