books.google.de - Published in five volumes, Flora Europaea is the definitive account of the flowering plants, ferns and fern-allies of Europe, covering all plants growing in the wild, including many naturalized species and all widely cultivated crop species. It provides full keys and concise descriptions of families,...http://books.google.de/books/about/Flora_Europaea.html?hl=de&id=XkI3UttRP6QC&utm_source=gb-gplus-shareFlora Europaea
