What is "pterocephalus"

Pterocephalus is a genus in the Caprifoliaceae family of herbs and shrubs, comprising 25 species ranging from the Mediterranean, to central Asia, the Himalayas, western China, and tropical Africa.

From Greek πτερον, pteron, a wing, and κεφαλη, kephale, a head, in reference to the receptacle of the flowers being villous or chaffy.