Verbatim text: Toman, J. 1972. A taxonomic survey of the genera Petasites and Endocellion. Folia Geobot. Phytotax. 7: 381–406.
Author: Toman, J.
Year: 1972
Title: A taxonomic survey of the genera Petasites and Endocellion
Journal: Folia Geobot. Phytotax
Volume: 7
Pages: 381–406