|H. sargentiana, syn. H. aspera subsp. sargentiana is not well known in the United States outside of the Pacific Northwest, where it performs well. Leaves are opposite, simple and ovate. The leaves are densely hairy below and the stems also have bristly hairs. The flowers appear in mid summer on 6-9 inches wide corymbs with large, showy, sterile florets on the outside edge that are a deep rosy-lilac. Requires moisture and shade, native to central China. Introduced 1907.