Tutin T.G., Heywood V.H., Burges N.A. et al. (eds.) Flora Europaea. Volume 4: Plantaginaceae to Composite (and Rubiaceae)

Cambridge: Cambridge University Press, 1976. — 534 p. — ISBN13: 9780521153690.The Flora Europaea, originally published between 1964 and 1980, explores the synthesis of all the national and regional Floras of Europe. It is based on a critical review of existing literature and on studies in herbaria and in the field. It aims to be simple as well as authoritative, and should enable a reader to name as far as its subspecies any fern, conifer or flowering plant growing wild or widely cultivated.
This fourth volume is a revision of the seventh edition of Willis, with substantial amendments and additions. One distinct feature is an alphabetical list of accepted family names in this dictionary with their equivalents in Bentham & Hooker's Genera Plantarum and Engler's Syllabus.