[1] Brown Univ, Dept Ecol & Evolutionary Biol, Providence, RI 02912 USA
[2] Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
[3] Univ Washington, Dept Biol, Seattle, WA 98195 USA
[4] Univ Washington, Burke Museum, Seattle, WA 98195 USA
[5] Natl Evolutionary Synth Ctr, Durham, NC 27705 USA
[6] Univ Cape Town, Dept Bot, Cape Town, South Africa
[7] Univ Lausanne, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
[8] Washington State Univ, Sch Biol Sci, Pullman, WA 99164 USA
[9] Northern Illinois Univ, Dept Biol Sci, De Kalb, IL 60115 USA
[10] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA
[11] Univ Western Sydney, Dept Plants Soil & Environm, S Penrith Distribut Ctr, New South Wales, Australia
[12] Univ Liverpool, Sch Biol Sci, Liverpool L69 3BX, Merseyside, England
[13] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA
[14] Western Ecol Res Ctr, Sequoia Kings Canyon Field Stat, Three Rivers, CA 93271 USA
[15] Univ Calif Los Angeles, Dept Ecol & Evolut Biol, Los Angeles, CA 90024 USA
[16] Univ Missouri, Dept Biol, St Louis, MO 63121 USA
[17] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA
[18] Univ Illinois, Inst Genom Biol, Dept Plant Biol, Urbana, IL 61801 USA
[19] Univ Maryland, Ctr Environm Sci Appalachian Lab, Frostburg, MD 21532 USA
[20] Canadian Museum Nat, Res Div, Ottawa, ON, Canada
[21] Univ Toronto, Dept Ecol & Evolut Biol, Toronto, ON, Canada
[22] Swiss Inst Bioinformat, Quartier Sorge, Lausanne, Switzerland
[23] Univ Calif, Dept Geography, Inst Computat Earth Syst Sci, Santa Barbara, CA 93106 USA
[24] Univ Utah, Dept Biol, Salt Lake City, UT 84112 USA