Field Guide to Trees

When evaluating the worthiness of field guides to trees, there are several criteria which might be considered; perhaps the first should be geographic coverage. If one is attempting to identify a tree in Iowa, one should not be using a guide covering only trees of the Pacific Slope. Although this may seem obvious, problems can occur in guide selection due to geographically misleading titles. Some guides may imply a geographic coverage which is in fact quite different from the actual coverage.