Karen L. Dillman,^* Teuvo Ahti,^** Curtis R. Björk,^*** Philippe Clerc,^**** Stefan Ekman,^***** Trevor Goward,^*** Josef Hafellner,^****** Sergio Pérez-Ortega,^******* Christian Printzen,^******** Sanja Savić,^********* Matthias Schultz,^********** Måns Svensson,^*********** Göran Thor,^*********** Tor Tønsberg,^************ Orvo Vitikainen,^** Martin Westberg,^{*************} Toby Spribille<sup>**************,***************


*</sup>Karen L. Dillman, U.S. Forest Service, Alaska Region, Tongass National Forest, P.O. Box 309, Petersburg, AK 99833, U.S.A. E-mail: kdillman@fs.fed.us
^**Teuvo Ahti and Orvo Vitikainen, Botanical Museum, Finnish Museum of Natural History, P.O. Box 7, 00014 University of Helsinki, Finland. E-mails: teuvo.ahti@helsinki.fi, orvo.vitikainen@helsinki.fi
^***Curtis R. Björk and Trevor Goward, UBC Herbarium, Beaty Museum, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. (Mailing address: Enlichened Consulting Ltd., 5369 Clearwater Valley Road, Upper Clearwater, B.C., Canada V0E 1N1). E-mails: crbjork@gmail.com, trevor.goward@botany.ubc.ca
^****Philippe Clerc, Conservatoire et jardin botaniques de la Ville de Genève, Case postale 60, 1292 Chambésy/GE, Switzerland. E-mail: philippe.clerc@cjb.ville-ge.ch
^*****Stefan Ekman, Museum of Evolution, Uppsala University, Norbyvägen 16, 75236 Uppsala, Sweden. E-mail: stefan.ekman@evolmuseum.uu.se
^******Josef Hafellner, Institute of Plant Sciences, University of Graz, Holteigasse 6, 8010 Graz, Austria. E-mail: josef.hafellner@uni-graz.at
^*******Sergio Pérez-Ortega, Instituto de Recursos Naturales, Centro de Ciencias Medioambientales CSIC, 28006 Madrid, Spain. E-mail: sperezortega@ccma.csic.es
^********Christian Printzen, Senckenberg Research Institute, Natural History Museum and Biodiversity and Climate Research Centre (LOEWE BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany. E-mail: Christian.Printzen@senckenberg.de
^*********Sanja Savic, Department of Systematic Botany, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden. E-mail: sanja.savic@ebc.uu.se
^**********Matthias Schultz, Biozentrum Klein Flottbek und Botanischer Garten der Universität Hamburg, Ohnhorststr. 18, 22609 Hamburg, Germany. E-mail: schultzm@botanik.uni-hamburg.de
^***********Måns Svensson and Göran Thor, Department of Ecology, Swedish University of Agricultural Sciences, P.O. Box 7044, 750 07 Uppsala, Sweden. E-mails: Mans.Svensson@ekol.slu.se, goran.thor@nvb.slu.se
^************Tor Tønsberg, Museum of Natural History, University of Bergen, Allégaten 41, P. O. Box 7800, 5020 Bergen, Norway. E-mail: tor.tonsberg@bm.uib.no
^{*************}Martin Westberg, Section for Cryptogamic Botany, Swedish Museum of Natural History, P. O. Box 50007, 10405, Stockholm, Sweden. E-mail: martin.westberg@nrm.se
^{**************}corresponding author
^{***************}Toby Spribille, Division of Biological Sciences HS 304, University of Montana, 32 Campus Drive, Missoula, MT 59812, U.S.A.; current address: Institute of Plant Sciences, University of Graz, Holteigasse 6, 8010 Graz, Austria. E-mail: toby.spribille@mso.umt.edu