Online Database References

Tree identification

• University of Connecticut College of Agriculture, Health and Natural Resources

www.hort.uconn.edu/search.php

•  Tree Virginia Tech Dendrology Factsheets, Department of Forest Resources and Environmental Conservation

www.dendro.cnre.vt.edu/dendrology/factsheets.cfm

General information on individual species

• The Gymnosperm Database - edited by Christopher J Earle

  www.conifers.org

• Urban Forests Ecostystem Institute at California Polytechnic Institute

www.ufei.calpoly.edu/index.lasso

• USDA Forest Service Index of Tree Species Information

www.fs.fed.us/database/feis/plants/tree/index.htm

Invasiveness

• Global Invasive Species Database online (posted as of June 26, 2009)

www.issg.org/database/welcome/

Lifespan of trees

• Average and Maximum Lifespan of Virginia Trees, Department of Forest Resources and Environmental Conservation, Virginia Tech

 www.bigtree.cnre.vt.edu/TreeAge.htm

Tallest and oldest trees

• Monumental Trees website: The thickest, tallest and oldest trees worldwide

 www.monumentaltrees.com/en/records/

Print References

General references

• Manual of Woody Landscape Plants - Michael A. Dirr (Stipes Publishing, fifth edition - 1998)
• Native Trees for North American Landscapes: From the Atlantic to the Rockies – Guy Sternberg (2004)
• New Trees:  Recent introductions to cultivation by John Grimshaw and Ross Bayton (Kew Publishing 2009) 
• North American Landscape Trees –- Arthur Lee Jacobson (First edition 1996)
• Northwest Trees –– Stephen F. Arno and Ramona P. Hammerly (The Mountaineers Books – revised edition 2007)
• Silvics of North America by Russell M. Burns and Barabara Honkala (USDA Forest Service 1990)
• The Book of Leaves by Allen J Coombes edited by Zsolt Debreczy (2010 The University of Chicago Press 2003)
• The World Encyclopedia of Trees by Tony Russell and Catherine Cutler (Anness Publishing)
• Trees for All Seasons – Sean Hogan (Timber Press, 2008)
• Trees of Seattle (second edition) by Arthur Lee Jacobson (2006)
• Trees of the California Landscape by Charles R. Hatch (University of California Press 2007)
• Uncommon Fruits For Every Garden – Lee Reich (Timber Press 2004)

Genus-specific references

• An Illustrated Guide to Maples– Antoine le Hardy de Beaulieu (Timber Press 2003)
• Magnolias: A Gardener’s Guide by Jim Gardiner (Timber Press Revised Edition 1989)
• Oaks of California – Bruce Pavlik, Pamela Muick, Sharon G. Johnson, Marjorie Popper (Cachuma Press fifth printing 2002)

Conifers

• A Natural History of Conifers – Aljos Farjon – (Timber Press 2008) Western Trees (Peterson Field Guides – 1998) – George and Olivia Petrides
• Conifers of California – Ronald M Lanner (Cachuma Press 1999)
• Conifers of the World:  The Complete Reference – James E. Eckenwalder (Timber Press 2009)