Authors
T. Tønsberg
Botanical institute, University of Bergen, Bergen, Norway
V. Gauslaa
Department of Biology and Nature Conservation, Agricultural University of Norway, Norway
R. Haugan
University of Oslo, Botanical Garden and Museum, Oslo, Norway
H. Holien
University of Trondheim, Museum of Natural History and Archaeology, Department of Botany, Trondheim, Norway
E. Timdal
University of Oslo, Botanical Garden and Museum, Oslo, Norway