1. Institute of Ecology and Earth Sciences, University of Tartu, 2 J. Liivi St., 50409 Tartu, Estonia
2. Department of Biology, University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada
3. Tottori Mycological Institute, 211, Kokoge, Tottori 689-1125, Japan
4. Department of Biological Sciences, California State Polytechnic University, Humboldt, 1 Harpst St., Arcata, California 95521 , USA
5. Manaaki Whenua—Landcare Research, 54 Gerald Street, Lincoln 7608, New Zealand