Hydrangea aspera is a shrub native to the region between the Himalaya, across southern China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, to Taiwan

Taiwan

Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

. The flowers are typically borne in large heads and are in variable shades of pale blue.

Considerable natural variation occurs in the species, and some of the variations are sometimes considered to be separate species; these include H. aspera ssp. sargentiana and H. villosa.