The Internet’s World Wide Web offers an astounding number of tree-related sites, rich in images and updated information. Below is a selection of the sites researched for this guide. All are worth exploring, but items with an asterisk are especially good for new tree enthusiasts. Sites devoted mainly to tree care appear in the “Tree Wellness” section.
Site addresses usually require an http://www prefix. Internet addresses change often, but sites can usually be found by Web searches using keywords from the site’s title or sponsor, e.g., “Ohio State University Plants.” Addresses may also be truncated from the right until a host directory is reached, e.g., hcs.ohio-state.edu/plants/html
hcs.ohio-state.edu/plants/html
*Ohio State University. Plants of Horticulture. Excellent tree and tree-part images (some from Virginia Polytechnic Institute), many with detailed species descriptions.
*Floridata. Plant Encyclopedia. Leads to regional trees and palms, with photos.
bluehen.ags.udel.edu/udbg/trees
*University of Delaware Botanic Gardens. Brief data, clear images for selected trees. Audio pronunciation of scientific names.
bcadventure.com/adventure/wilderness/forest/index.html
*British Columbia Adventure Network. Includes illustrated descriptions of British Columbia’s forest trees.
*Virtual Garden. “Mother of all gardening sites.” Includes Time-Life Plant Encyclopedia with tree descriptions and basic care advice. Links with garden forums and related sites.
orst.edu/dept/ldplants/index/htm#aehi226
*Oregon State University, Horticulture, and Oregon Master Garden Association. Landscape Plants. Some 450 plants, mostly woody, with fine images. Compiled for a botany course.
*University of Alabama/Huntsville. Campus Tree Section. Display of more than 275 campus trees. Good data, select images.
*University of Washington. Brockman Memorial Tree Tour. Notes and images for some 480 tree types on this lovely Seattle-area campus.
*Domtar and Comission Scholaire de la Seigneurie-des-Milles-Îles (Quebec). Trees in North America. Descriptions of trees and images of tree parts. Clickable North American map for regional trees. French or English.
galaxy.cs.berkeley.edu/photos/flora/
*Calphotos. California Plants and Habitats. Searchable base of 20,000 native and naturalized California plants, including trees. Photos, basic data, distribution.
fs.fed.us/database/feis/plants/tree/
U.S. Department of Agriculture, Forest Service, Intermountain Research Station, Intermountain Fire Sciences Lab., Missoula, Mont. The Fire Effects Information System [database]. Abundant information on native and naturalized tree species from official source. Text only.
newton.dep.anl.gov/natbltn/natbltn.htm
Forest Preserve District of Cook County, Ill. Nature Bulletins. Charming, informative essays.
msue.msu.edu/msue/imp/modb1/masterb1.html
Michigan State University Extension. Urban Forestry Bibliography. Citations only. Massive.
greenindustry.com/search/aa.asp
Searchable archive of Arbor Age magazine. Excellent tree-of-the-month articles.
A Modern Herbal, by Mrs. M. Grieve. Text of the classic 1931 work including medicinal, culinary, cosmetic, commercial, cultural, and folkloric information on trees.
University of Wisconsin/Madison. Woody Plant Collection. Ambitious collection of images compiled for a course.
Brooklyn Botanic Garden. Metropolitan Plant Encyclopedia. Distribution maps, bibliography, other data on New York–area trees.
José Manuel Sánchez de Lorenzo Cáceres. Los Arboles en España. (The Trees in Spain.) A fine Spanish site with such pictorial offerings as bark of 160 species.
Arid Zone Trees. Arid Zone Tree Gallery. Photos and basic data on desert-region trees cultivated by AZT landscape architects. Acacia, mesquite, several others.
University of Illinois Department of Forestry. Urban and Community Forestry Resource Material Guide. Sources described include books, software, consultants, and education.
Links to a slew of exceptional tree sites in northern Europe, including the Royal Botanical Garden site.