Flora of the U.S.S.R.:Volume 30, Compositae: Genus Hieracium

摘要

The Thirtieth volume of the Flora of the USSR contains the descriptions of the species of the genus Hieracium, the last genus of the system. The extreme difficulty of the systematics of the genus is associated with the apomictic reproduction of the vast majority of the species. The absence of any significant recent revisions in the Russian literature has made the study of the hawkweeds of our flora practically impossible.