This revised and updated checklist supersedes the older one, published in 1953 (USDA Handbook No. 41), and has been used as a means of making available to many professional people the numerous changes in tree systematics since 1953.
This revised and updated checklist supersedes the older one, published in 1953 (USDA Handbook No. 41), and has been used as a means of making available to many professional people the numerous changes in tree systematics since 1953.