This variety of the species is
native to Korea and was first described by
Dr. Fumio Maekawa in 1937. It
is basically the same as the species,
H. clausa except
that, unlike the species, its flowers open normally. The plant
is large size growing to about 20 inches high with a spread of 54 inches. It bears
bell-shaped, medium purple flowers in August. According to
The Hostapedia by Mark Zilis (2009), "...indistinguishable from H. clausa until it blooms
in August."
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