Hydrangea involucrata
Hydrangea involucrata Siebold

Hydrangea involucrata is a species of flowering plant in the Hydrangeaceae family, native to Japan and the Nansei-shoto region. It is a deciduous shrub that can reach up to 1 m in height and 2 m in width, with oval leaves and clusters of blue or pink flowers appearing in late summer.
Description
Hydrangea involucrata, described by Siebold in 1828, is a member of the Hydrangeaceae family. It is a deciduous shrub native to Japan and the Nansei-shoto archipelago. The plant typically grows to a height of 1 m and a width of 2 m. It features oval-shaped leaves and produces clusters of blue or pink flowers during late summer.
Distribution
Japan · Nansei-shoto
Synonyms
Platycrater involucrata