Artist's book. With text by Herman de Vries ('natural relations - eine einleitung') and 404 numbered herbs and plants collected by herman de vries on Moroccan markets and shops with description, Latin, Moroccan and German name and sometimes in Arabic, the place of collection (and a list) and almost every plant with illustration. The book is completed with notes, the text 'unterwegs' by Herman de Vries and indexes, bibliography, biography and an iconographic section (photographs by Susanne Jacob de Vries, Herman de Vries, Nikolaus Koliusis and Bruno Schneyer). On the last page a view of the exhibition 'die marokkanische sammlung' at Galerie Mueller-Roth, Stuttgart (1984). [288] pp; 29,7x21 cm