petasites albus

Petasites albus, the white butterbur, is a flowering plant species in the daisy family Asteraceae. It is native to central Europe and the Caucasus.

Petasites albus is a perennial rhizomatous herb, with large suborbicular leaves covered with lax cottony hairs. The flower heads are compact racemes of composite floweres or capitula with white ligules. They are dioecious, the male plants often more common than the females, as in the British range.

The native range of Petasites albus is the mountains ...