Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. Volume 1: Pteridophyta (Psilotaceae to Azollaceae); Volume 2: Gymnospermae (Pinaceae to Ephedraceae); Volume 3: Salicaceae to Balanophoraceae; Volume 4: Polygonaceae; Volume 5: Chenopodiaceae to Basellaceae. Vol. 6: Caryophyllaceae (Alsinoideae and Paronychioideae); Volume 7: Caryophyllaceae (Silenoideae).