Switzerland / Netherlands / France / Japan / Canada / Korea / United Kingdom / China / Finland / Wales / Germany / Sweden / United States / Ireland / / /
Event
Natural Disaster / /
Facility
Winkworth arboretum / Hillier arboretum / Plant Patent No. / North Dakota State University / University of Wisconsin / U.S. National Arboretum / Fullers Mill / University of Guelph / Madison arboretum / University of Wisconsin-Madison / /
IndustryTerm
glass manufacturing fame / /
NaturalFeature
Fox Valley / Mt Zao / Hemlock Valley / River Birch / Keystone Heights / Mt Apoi / La river / Grayswood Hill / /
Organization
University of Guelph / USDA / North Dakota State University / Michigan state University / Forestry Commission / University of Wisconsin / /
Person
Tim Whiteley / Kenneth Ashburner / Alphons van der Bom / Peter Mills / Jim King / Brian Humphrey / Ivan Dickings / Bernard Ticknor / John L. Creech / Chris Lane / Dieter Trost / Martyn Rix / Carl Whitcomb / Kevin Croucher / Belle Vue / H.J. Grootendorst / Hugh McAllister / Mitchell / Maurice Foster / Edward R. Hasselkus / Chris Sanders / Thomas Pinney / Chris Brickell / Earl Cully / Harold Hillier / Oswego / Prince / Robert Vernon / Darrell Kromm / Tony Schilling / Tom Dilatush / Lane Gardens / Tom Pinney Jr / Richard Bush / Mark Fillan / Maurice Mason / Forrest Keeling / Simon-Louis Freres / Roy Lancaster / John Creech / Matt Lohan / Birch Cultivars / Paul Bartlett / /
Research of Birch Cultivars by Paul Bartlett, Stone Lane Gardens, Chagford, Devon. last updated: Introduction Early in 2011 I was asked by Martyn Rix to create a written record