The book starts with a history of the genus, systematics, morphology, biology and recent novelties from the Botanical Code. Follow chapters on the relation between plants and insects or fungi and on phylogenetics of the genus. Information on botanists involved in research of the genus, protection, plant geography, followed by the monographs. 97 species or subspecies are described in details: Taxonomy, description, pollinators, habitat, distr. maps per province, supplementary notes. 15 non – described taxa are listed, followed by photographs of albinos and hybrids. Finally a comprehensive bibliography is offered.
Photographs 576 p
(French / Italian)